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प्र: 5% of 40,000 is 1811 0

उत्तर : 2. "2000"
व्याख्या :
Answer: B) 2000 Explanation: 5% of 40,000 = 5100 × 40,000 = 5 × 400 = 2,000 Hence, 5% of 40,000 = 2,000.

प्र: A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ? 1807 0

उत्तर : 3. "3 hrs"
व्याख्या :
Answer: C) 3 hrs Explanation: Let t be the usual time. If the usual rate is 1 unit, then the unusual rate is 6/7.Balance by the distance,1 x t = (6/7)(t + 30)7t = 6(t + 30)we get t as,t = 180 minutes = 3 hrs.

प्र: P can do a piece of work in 5 less days than Q. If both of them can do the same work in 1119days, in how many days will Q alone do the same work ? 1804 0

उत्तर : 2. "25 days"
व्याख्या :
Answer: B) 25 days Explanation: Let Q complete that work in 'L' days => 1L + 1L-5 = 9100 => 9L2-245L+500=0 L = 25 days.

प्र: Find the compound interest on Rs. 2680 at 8% per annum for 2 years ? 1799 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: In an old Palace there are 50 stairs to go on top floor. Each is 20 cm high, 30 cm wide and 60 cm long. If all the stairs are re-plastered at the rate of Rs. 4 per 100 sq.cm. What is the expenditure ? 1797 0

उत्तर : 3. "Rs. 6000"
व्याख्या :
Answer: C) Rs. 6000 Explanation: Total are of all stairs = 50 (20x60 + 30x60) = 50 (1200 + 1800) = 50 x 3000 = 150000 sq cm. Given rate of 100 sq cm = Rs. 4 Then for 150000 sq. cm = ? => 4 x 150000/100 = Rs. 6000

प्र: A can do a piece of work in 15 days and B can do it in 16 days and C can do it 24 days. They started the work together and A leaves after 3 days and B leaves after 4 days from the beginning. How long will work lost ? 1795 0

उत्तर : 2. "13 1/5 days"
व्याख्या :
Answer: B) 13 1/5 days Explanation: 3/15 + 4/16 + x/24 = 1 ⇒x=1315

प्र: At present, the ratio between the ages of Arun and Harish is 4:3. After 6 years, Arun's age will be 26 years. What is the age of Harish at present ? 1795 0

उत्तर : 1. "15 years"
व्याख्या :
Answer: A) 15 years Explanation: Let the present ages of Arun and Harish be 4x and 3x years respectively. Then, 4x + 6 = 26 => x = 5 Harish's age = 3x = 15 years.

प्र: On retirement, a woman gets Rs. 1,45,440 of her provident fund which she invests in a scheme at 20% per annum. Her monthly income from this scheme will be 1795 0

उत्तर : 2. "Rs. 2424"
व्याख्या :
Answer: B) Rs. 2424 Explanation: Now, the principal amount P = Rs. 1,45,440 Rate of interest R = 20%/annum Now monthly income I = PTR/100 = 1,45,440 x 20 x 1/100 x 12 = 2908800/1200 = Rs. 2424. Hence, her monthly income = Rs. 2424.

प्र: 5% of 40,000 is 1811 05b5cc6ade4d2b4197774d0ee

उत्तर : 2. "2000" व्याख्या :Answer: B) 2000 Explanation: 5% of 40,000 = 5100 × 40,000 = 5 × 400 = 2,000 Hence, 5% of 40,000 = 2,000.

प्र: A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ? 1807 05b5cc720e4d2b4197774f62c

उत्तर : 3. "3 hrs" व्याख्या :Answer: C) 3 hrs Explanation: Let t be the usual time. If the usual rate is 1 unit, then the unusual rate is 6/7.Balance by the distance,1 x t = (6/7)(t + 30)7t = 6(t + 30)we get t as,t = 180 minutes = 3 hrs.

प्र: P can do a piece of work in 5 less days than Q. If both of them can do the same work in 1119days, in how many days will Q alone do the same work ? 1804 05b5cc6c2e4d2b4197774dbcd

उत्तर : 2. "25 days" व्याख्या :Answer: B) 25 days Explanation: Let Q complete that work in 'L' days => 1L + 1L-5 = 9100 => 9L2-245L+500=0 L = 25 days.

प्र: Find the compound interest on Rs. 2680 at 8% per annum for 2 years ? 1799 05b5cc6b4e4d2b4197774d4de

प्र: In an old Palace there are 50 stairs to go on top floor. Each is 20 cm high, 30 cm wide and 60 cm long. If all the stairs are re-plastered at the rate of Rs. 4 per 100 sq.cm. What is the expenditure ? 1797 05b5cc6cbe4d2b4197774e0f9

उत्तर : 3. "Rs. 6000" व्याख्या :Answer: C) Rs. 6000 Explanation: Total are of all stairs = 50 (20x60 + 30x60) = 50 (1200 + 1800) = 50 x 3000 = 150000 sq cm. Given rate of 100 sq cm = Rs. 4 Then for 150000 sq. cm = ? => 4 x 150000/100 = Rs. 6000

प्र: A can do a piece of work in 15 days and B can do it in 16 days and C can do it 24 days. They started the work together and A leaves after 3 days and B leaves after 4 days from the beginning. How long will work lost ? 1795 05b5cc6dae4d2b4197774e8dc

उत्तर : 2. "13 1/5 days" व्याख्या :Answer: B) 13 1/5 days Explanation: 3/15 + 4/16 + x/24 = 1 ⇒x=1315

प्र: At present, the ratio between the ages of Arun and Harish is 4:3. After 6 years, Arun's age will be 26 years. What is the age of Harish at present ? 1795 05b5cc6e1e4d2b4197774ebfc

उत्तर : 1. "15 years" व्याख्या :Answer: A) 15 years Explanation: Let the present ages of Arun and Harish be 4x and 3x years respectively. Then, 4x + 6 = 26 => x = 5 Harish's age = 3x = 15 years.

प्र: On retirement, a woman gets Rs. 1,45,440 of her provident fund which she invests in a scheme at 20% per annum. Her monthly income from this scheme will be 1795 05b5cc6a2e4d2b4197774cb9e

उत्तर : 2. "Rs. 2424" व्याख्या :Answer: B) Rs. 2424 Explanation: Now, the principal amount P = Rs. 1,45,440 Rate of interest R = 20%/annum Now monthly income I = PTR/100 = 1,45,440 x 20 x 1/100 x 12 = 2908800/1200 = Rs. 2424. Hence, her monthly income = Rs. 2424.

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प्र: 5% of 40,000 is 1811 0

उत्तर : 2. "2000"
व्याख्या :
Answer: B) 2000 Explanation: 5% of 40,000 = 5100 × 40,000 = 5 × 400 = 2,000 Hence, 5% of 40,000 = 2,000.

प्र: A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ? 1807 0

उत्तर : 3. "3 hrs"
व्याख्या :
Answer: C) 3 hrs Explanation: Let t be the usual time. If the usual rate is 1 unit, then the unusual rate is 6/7.Balance by the distance,1 x t = (6/7)(t + 30)7t = 6(t + 30)we get t as,t = 180 minutes = 3 hrs.

प्र: P can do a piece of work in 5 less days than Q. If both of them can do the same work in 1119days, in how many days will Q alone do the same work ? 1804 0

उत्तर : 2. "25 days"
व्याख्या :
Answer: B) 25 days Explanation: Let Q complete that work in 'L' days => 1L + 1L-5 = 9100 => 9L2-245L+500=0 L = 25 days.

प्र: Find the compound interest on Rs. 2680 at 8% per annum for 2 years ? 1799 0

प्र: In an old Palace there are 50 stairs to go on top floor. Each is 20 cm high, 30 cm wide and 60 cm long. If all the stairs are re-plastered at the rate of Rs. 4 per 100 sq.cm. What is the expenditure ? 1797 0

उत्तर : 3. "Rs. 6000"
व्याख्या :
Answer: C) Rs. 6000 Explanation: Total are of all stairs = 50 (20x60 + 30x60) = 50 (1200 + 1800) = 50 x 3000 = 150000 sq cm. Given rate of 100 sq cm = Rs. 4 Then for 150000 sq. cm = ? => 4 x 150000/100 = Rs. 6000

प्र: A can do a piece of work in 15 days and B can do it in 16 days and C can do it 24 days. They started the work together and A leaves after 3 days and B leaves after 4 days from the beginning. How long will work lost ? 1795 0

उत्तर : 2. "13 1/5 days"
व्याख्या :
Answer: B) 13 1/5 days Explanation: 3/15 + 4/16 + x/24 = 1 ⇒x=1315

प्र: At present, the ratio between the ages of Arun and Harish is 4:3. After 6 years, Arun's age will be 26 years. What is the age of Harish at present ? 1795 0

उत्तर : 1. "15 years"
व्याख्या :
Answer: A) 15 years Explanation: Let the present ages of Arun and Harish be 4x and 3x years respectively. Then, 4x + 6 = 26 => x = 5 Harish's age = 3x = 15 years.

प्र: On retirement, a woman gets Rs. 1,45,440 of her provident fund which she invests in a scheme at 20% per annum. Her monthly income from this scheme will be 1795 0

उत्तर : 2. "Rs. 2424"
व्याख्या :
Answer: B) Rs. 2424 Explanation: Now, the principal amount P = Rs. 1,45,440 Rate of interest R = 20%/annum Now monthly income I = PTR/100 = 1,45,440 x 20 x 1/100 x 12 = 2908800/1200 = Rs. 2424. Hence, her monthly income = Rs. 2424.