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प्र: Find the compound interest on Rs. 2680 at 8% per annum for 2 years ? 1891 0

उत्तर : 3. "Rs. 445.95"
व्याख्या :
Answer: C) Rs. 445.95 Explanation: We know Compound Interest = C.I. = P1+r100t - 1 Here P = 2680, r = 8 and t = 2 C.I. = 26801 + 81002-1= 268027252-12= 26802725+12725-1= 2680 5225×225 = (2680 x 52 x 2)/625 = 445.95 Compound Interest = Rs. 445.95

प्र: A began a business with Rs. 85000. He was joined afterwards by B with Rs. 42,500. For how much perod does B join, if the profits at the end of the year are divided in the ratio of 3:1 ? 1890 0

उत्तर : 1. "8 months"
व्याख्या :
Answer: A) 8 months Explanation: Suppose B joined for x months. Given profit is divided in the ratio 3:1. Then, 85000×1242500×x=31 --> x = 8 months.

प्र: The price of an article has been reduced by 35%. In order to restore the original price the new price must be increased by ? 1888 0

उत्तर : 4. "53.84 %"
व्याख्या :
Answer: D) 53.84 % Explanation: 100 65 -------65 ------- 35100 ------ ? => 53.84 %

प्र: 16 of 225 is = 1888 0

उत्तर : 1. "7.11"
व्याख्या :
Answer: A) 7.11 Explanation: 16 of 225 is = 16 = p × 225100p = 1600225 = 7.1111

प्र: What will be the ratio of simple interest earned by certain amount at the same rate of interestfor 4 years and 6 years ? 1887 0

उत्तर : 3. "2:3"
व्याख्या :
Answer: C) 2:3 Explanation: Let p be the principle amount And R% be the rate of interest Then, required ratio =P×4×R100P×6×R100 ⇒4PR6PR= 2:3

प्र: A man reads 3/7 of a book on a day and 2/5 of the remaining, on the second day. If the number of pages still unread are 36, how many pages did the book contain ? 1885 0

उत्तर : 1. "105"
व्याख्या :
Answer: A) 105 Explanation: Let number of pages in a book = p According to questions p - [3p/7 + (2/5 x 4p/7)] = 36 = p - 23p/35 = 36 => 12p = 36 × 35 p = 105

प्र: Mahesh bought 100 kg of rice for Rs. 1040 and sold it at a loss of as much money as he received for 30 kg rice. At what price did he sell the rice? 1885 0

उत्तर : 2. "Rs. 8/kg"
व्याख्या :
Answer: B) Rs. 8/kg Explanation: Let the selling price of the rice = Rs.P/kg Now, according to the question, 1040 - 100p = 30p => p = 8/kg Hence, the selling price of the rice = Rs. 8/kg

प्र: Prasanna invested certain amount in three different schemes X, Y and Z with the rate of interest 10% p.a, 12% p.a and 15% p.a respectively. If the total interest accrued in one year was Rs. 3200 and the amount invested in Scheme Z was 150% of the amount invested in Scheme X and 240% of the amount invested in Scheme Y, what was the amount invested in Scheme Y by Prasanna ? 1875 0

उत्तर : 4. "Rs.5000"
व्याख्या :
Answer: D) Rs.5000 Explanation: Let a, b and c be the amounts invested in schemes X, Y and Z respectively. Then, As we know: Simple interest (S.I.) = PTR/100 (a × 10 × 1/100) + (b × 12 × 1/100) + (c × 15 × 1/100) = 3200 = 10a + 12b + 15c = 320000 .........(1) Now, c = 240% of b = 12b/5 .........(2) And, c = 150% of a = 3a/2 => a = 2/3 c = (2 × 12)b/(3 × 5) = 8b/5 .......(3) From (1), (2) and (3), we have 16b + 12b + 36b = 320000 => 64b = 320000 => b = 5000 ∴ Sum invested in Scheme Y = Rs.5000.

प्र: Find the compound interest on Rs. 2680 at 8% per annum for 2 years ? 1891 0

प्र: A began a business with Rs. 85000. He was joined afterwards by B with Rs. 42,500. For how much perod does B join, if the profits at the end of the year are divided in the ratio of 3:1 ? 1890 0

उत्तर : 1. "8 months"
व्याख्या :
Answer: A) 8 months Explanation: Suppose B joined for x months. Given profit is divided in the ratio 3:1. Then, 85000×1242500×x=31 --> x = 8 months.

प्र: The price of an article has been reduced by 35%. In order to restore the original price the new price must be increased by ? 1888 0

उत्तर : 4. "53.84 %"
व्याख्या :
Answer: D) 53.84 % Explanation: 100 65 -------65 ------- 35100 ------ ? => 53.84 %

प्र: 16 of 225 is = 1888 0

उत्तर : 1. "7.11"
व्याख्या :
Answer: A) 7.11 Explanation: 16 of 225 is = 16 = p × 225100p = 1600225 = 7.1111

प्र: What will be the ratio of simple interest earned by certain amount at the same rate of interestfor 4 years and 6 years ? 1887 0

उत्तर : 3. "2:3"
व्याख्या :
Answer: C) 2:3 Explanation: Let p be the principle amount And R% be the rate of interest Then, required ratio =P×4×R100P×6×R100 ⇒4PR6PR= 2:3

प्र: A man reads 3/7 of a book on a day and 2/5 of the remaining, on the second day. If the number of pages still unread are 36, how many pages did the book contain ? 1885 0

उत्तर : 1. "105"
व्याख्या :
Answer: A) 105 Explanation: Let number of pages in a book = p According to questions p - [3p/7 + (2/5 x 4p/7)] = 36 = p - 23p/35 = 36 => 12p = 36 × 35 p = 105

प्र: Mahesh bought 100 kg of rice for Rs. 1040 and sold it at a loss of as much money as he received for 30 kg rice. At what price did he sell the rice? 1885 0

उत्तर : 2. "Rs. 8/kg"
व्याख्या :
Answer: B) Rs. 8/kg Explanation: Let the selling price of the rice = Rs.P/kg Now, according to the question, 1040 - 100p = 30p => p = 8/kg Hence, the selling price of the rice = Rs. 8/kg

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प्र: Find the compound interest on Rs. 2680 at 8% per annum for 2 years ? 1891 05b5cc6b4e4d2b4197774d4de

प्र: A began a business with Rs. 85000. He was joined afterwards by B with Rs. 42,500. For how much perod does B join, if the profits at the end of the year are divided in the ratio of 3:1 ? 1890 05b5cc767e4d2b4197774fe2c

उत्तर : 1. "8 months" व्याख्या :Answer: A) 8 months Explanation: Suppose B joined for x months. Given profit is divided in the ratio 3:1. Then, 85000×1242500×x=31 --> x = 8 months.

प्र: The price of an article has been reduced by 35%. In order to restore the original price the new price must be increased by ? 1888 05b5cc6dfe4d2b4197774eae4

उत्तर : 4. "53.84 %" व्याख्या :Answer: D) 53.84 % Explanation: 100 65 -------65 ------- 35100 ------ ? => 53.84 %

प्र: 16 of 225 is = 1888 05b5cc6b4e4d2b4197774d4d4

उत्तर : 1. "7.11" व्याख्या :Answer: A) 7.11 Explanation: 16 of 225 is = 16 = p × 225100p = 1600225 = 7.1111

प्र: What will be the ratio of simple interest earned by certain amount at the same rate of interestfor 4 years and 6 years ? 1887 05b5cc767e4d2b4197774fe15

उत्तर : 3. "2:3" व्याख्या :Answer: C) 2:3 Explanation: Let p be the principle amount And R% be the rate of interest Then, required ratio =P×4×R100P×6×R100 ⇒4PR6PR= 2:3

प्र: A man reads 3/7 of a book on a day and 2/5 of the remaining, on the second day. If the number of pages still unread are 36, how many pages did the book contain ? 1885 05b5cc6c3e4d2b4197774dc4f

उत्तर : 1. "105" व्याख्या :Answer: A) 105 Explanation: Let number of pages in a book = p According to questions p - [3p/7 + (2/5 x 4p/7)] = 36 = p - 23p/35 = 36 => 12p = 36 × 35 p = 105

प्र: Mahesh bought 100 kg of rice for Rs. 1040 and sold it at a loss of as much money as he received for 30 kg rice. At what price did he sell the rice? 1885 05b5cc6b3e4d2b4197774d3e3

उत्तर : 2. "Rs. 8/kg" व्याख्या :Answer: B) Rs. 8/kg Explanation: Let the selling price of the rice = Rs.P/kg Now, according to the question, 1040 - 100p = 30p => p = 8/kg Hence, the selling price of the rice = Rs. 8/kg

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प्र: Find the compound interest on Rs. 2680 at 8% per annum for 2 years ? 1891 0

प्र: A began a business with Rs. 85000. He was joined afterwards by B with Rs. 42,500. For how much perod does B join, if the profits at the end of the year are divided in the ratio of 3:1 ? 1890 0

उत्तर : 1. "8 months"
व्याख्या :
Answer: A) 8 months Explanation: Suppose B joined for x months. Given profit is divided in the ratio 3:1. Then, 85000×1242500×x=31 --> x = 8 months.

प्र: The price of an article has been reduced by 35%. In order to restore the original price the new price must be increased by ? 1888 0

उत्तर : 4. "53.84 %"
व्याख्या :
Answer: D) 53.84 % Explanation: 100 65 -------65 ------- 35100 ------ ? => 53.84 %

प्र: 16 of 225 is = 1888 0

उत्तर : 1. "7.11"
व्याख्या :
Answer: A) 7.11 Explanation: 16 of 225 is = 16 = p × 225100p = 1600225 = 7.1111

प्र: What will be the ratio of simple interest earned by certain amount at the same rate of interestfor 4 years and 6 years ? 1887 0

उत्तर : 3. "2:3"
व्याख्या :
Answer: C) 2:3 Explanation: Let p be the principle amount And R% be the rate of interest Then, required ratio =P×4×R100P×6×R100 ⇒4PR6PR= 2:3

प्र: A man reads 3/7 of a book on a day and 2/5 of the remaining, on the second day. If the number of pages still unread are 36, how many pages did the book contain ? 1885 0

उत्तर : 1. "105"
व्याख्या :
Answer: A) 105 Explanation: Let number of pages in a book = p According to questions p - [3p/7 + (2/5 x 4p/7)] = 36 = p - 23p/35 = 36 => 12p = 36 × 35 p = 105

प्र: Mahesh bought 100 kg of rice for Rs. 1040 and sold it at a loss of as much money as he received for 30 kg rice. At what price did he sell the rice? 1885 0

उत्तर : 2. "Rs. 8/kg"
व्याख्या :
Answer: B) Rs. 8/kg Explanation: Let the selling price of the rice = Rs.P/kg Now, according to the question, 1040 - 100p = 30p => p = 8/kg Hence, the selling price of the rice = Rs. 8/kg