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प्र: An amount doubles itself in 15 years. what is the rate of interest ? 1765 0

उत्तर : 3. "6.66 %"
व्याख्या :
Answer: C) 6.66 % Explanation: Let the principle be Rs. PAs the amount double itself the interest is Rs. P tooSo P = P x r x 15/100=> r = 100/15 = 20/3 % = 6.66 %.

प्र: In a 48 ltr mixture, the ratio of milk and water is 5:3. How much water should be added in the mixture so as the ratio will become 3:5 ? 1764 0

उत्तर : 3. "32 lit"
व्याख्या :
Answer: C) 32 lit Explanation: Given mixture = 48 lit Milk in it = 48 x 5/8 = 30 lit => Water in it = 48 - 30 = 18 lit Let 'L' lit of water is added to make the ratio as 3:5 => 30/(18+L) = 3/5 => 150 = 54 + 3L => L = 32 lit.

प्र: Three friends had dinner at a restaurant. When the bill was received, Akshitha paid 2/3 as much as Veena paid and Veena paid 1/2 as much as Lasya paid. What fraction of the bill did Veena pay ? 1763 0

उत्तर : 3. "3/11"
व्याख्या :
Answer: C) 3/11 Explanation: Let Veena paid x,so Akshitha paid 2x/3 , and Lasya paid 2x,So total bill paid is given byx+(2x/3) +2x = 1, we geti.e. x = 3/11

प्र: A shopkeeper sells two articles at Rs.1000 each, making a profit of 30% on the first article and a loss of 20% on the second article. Find the net profit or loss that he makes ? 1761 0

उत्तर : 2. "0.95 %"
व्याख्या :
Answer: B) 0.95 % Explanation: SP of first article = 1000Profit = 30%CP = (SP)x[100/(100+P)] = 10000/13 SP of second article = 1000Loss = 20%CP = (SP)x[100/(100-L)] = 5000/4 = 1250 Total SP = 2000 Total CP = 10000/13 + 1250 = 2019.23 CP is more than SP, he makes a loss. Loss = CP-SP = 2019.23 - 2000 = 19.23Loss Percent = [(19.23)/(2019.23)]x100 = 0.95 %.

प्र: If three eighth of a number is 141. What will be the approximately value of 32.08% of this number ? 1761 0

उत्तर : 4. "120"
व्याख्या :
Answer: D) 120 Explanation: K x 3/8 = 141 => K = 376 376 x 32.08/100 = 120

प्र: A, B and C started a company where their initial investments was in the ratio of 2:3:4. At the end of 6 months, A invested an amount such that his total capital became equal to B's initial capital investment. If the annual profit of B is Rs. 3000 then what is the total profit of the company ? 1761 0

उत्तर : 1. "Rs. 9500"
व्याख्या :
Answer: A) Rs. 9500 Explanation: Given initial investments ratio = 2 : 3 : 4 At the end of 6 months, A invested an amount such that his total capital became equal to B's initial capital investment i.e, upto 6 months A's investment is 2 and after 6 months his invstment is 3 = B's investment Now, Ratio of investment for one year => A : B : C = (2×6 + 3×6) : (3×12) : (4×12) = 30 : 36 : 48 = 5 : 6 : 8 But given B's profit = 3000 => 6 ratio = 3000 For total => 19 ratio = Rs. 9500.

प्र: One lady has 2 children, one of her child is boy, what is the probability of having both are boys ? 1760 0

उत्तर : 1. "1/3"
व्याख्या :
Answer: A) 1/3 Explanation: In a family with 2 children there are four possibilities:1) the first child is a boy and the second child is a boy (bb)2) the first child is a boy and the second child is a girl (bg)3) the first child is a girl and the second child is a boy (gb)4) the first child is a girl and the second child is a girl (gg) But already given that one child is boy. So we have three possibilities of (bb)(bg)(gb).n(E)= both are boys=BB=1n(S)= 3Required probability P = n(E)/n(S) = 1/3.

प्र: 74.99% of 1299 + 8.98% of 1899 = ? 1759 0

प्र: An amount doubles itself in 15 years. what is the rate of interest ? 1765 0

उत्तर : 3. "6.66 %"
व्याख्या :
Answer: C) 6.66 % Explanation: Let the principle be Rs. PAs the amount double itself the interest is Rs. P tooSo P = P x r x 15/100=> r = 100/15 = 20/3 % = 6.66 %.

प्र: In a 48 ltr mixture, the ratio of milk and water is 5:3. How much water should be added in the mixture so as the ratio will become 3:5 ? 1764 0

उत्तर : 3. "32 lit"
व्याख्या :
Answer: C) 32 lit Explanation: Given mixture = 48 lit Milk in it = 48 x 5/8 = 30 lit => Water in it = 48 - 30 = 18 lit Let 'L' lit of water is added to make the ratio as 3:5 => 30/(18+L) = 3/5 => 150 = 54 + 3L => L = 32 lit.

प्र: Three friends had dinner at a restaurant. When the bill was received, Akshitha paid 2/3 as much as Veena paid and Veena paid 1/2 as much as Lasya paid. What fraction of the bill did Veena pay ? 1763 0

उत्तर : 3. "3/11"
व्याख्या :
Answer: C) 3/11 Explanation: Let Veena paid x,so Akshitha paid 2x/3 , and Lasya paid 2x,So total bill paid is given byx+(2x/3) +2x = 1, we geti.e. x = 3/11

प्र: A shopkeeper sells two articles at Rs.1000 each, making a profit of 30% on the first article and a loss of 20% on the second article. Find the net profit or loss that he makes ? 1761 0

प्र: If three eighth of a number is 141. What will be the approximately value of 32.08% of this number ? 1761 0

उत्तर : 4. "120"
व्याख्या :
Answer: D) 120 Explanation: K x 3/8 = 141 => K = 376 376 x 32.08/100 = 120

प्र: One lady has 2 children, one of her child is boy, what is the probability of having both are boys ? 1760 0

प्र: 74.99% of 1299 + 8.98% of 1899 = ? 1759 0

उत्तर : 3. "1212"
व्याख्या :
Answer: C) 1212 Explanation: 74.99% of 1299 + 8.98% of 1899 = ? ? = 75 x 1400100 + 9 x 1800100 ? = 1050 + 162? = 1212.

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प्र: An amount doubles itself in 15 years. what is the rate of interest ? 1765 05b5cc711e4d2b4197774f3cd

उत्तर : 3. "6.66 %" व्याख्या :Answer: C) 6.66 % Explanation: Let the principle be Rs. PAs the amount double itself the interest is Rs. P tooSo P = P x r x 15/100=> r = 100/15 = 20/3 % = 6.66 %.

प्र: In a 48 ltr mixture, the ratio of milk and water is 5:3. How much water should be added in the mixture so as the ratio will become 3:5 ? 1764 05b5cc6c2e4d2b4197774dbff

उत्तर : 3. "32 lit" व्याख्या :Answer: C) 32 lit Explanation: Given mixture = 48 lit Milk in it = 48 x 5/8 = 30 lit => Water in it = 48 - 30 = 18 lit Let 'L' lit of water is added to make the ratio as 3:5 => 30/(18+L) = 3/5 => 150 = 54 + 3L => L = 32 lit.

प्र: Three friends had dinner at a restaurant. When the bill was received, Akshitha paid 2/3 as much as Veena paid and Veena paid 1/2 as much as Lasya paid. What fraction of the bill did Veena pay ? 1763 05b5cc71ee4d2b4197774f5ae

उत्तर : 3. "3/11" व्याख्या :Answer: C) 3/11 Explanation: Let Veena paid x,so Akshitha paid 2x/3 , and Lasya paid 2x,So total bill paid is given byx+(2x/3) +2x = 1, we geti.e. x = 3/11

प्र: A shopkeeper sells two articles at Rs.1000 each, making a profit of 30% on the first article and a loss of 20% on the second article. Find the net profit or loss that he makes ? 1761 05b5cc6e2e4d2b4197774ec20

प्र: If three eighth of a number is 141. What will be the approximately value of 32.08% of this number ? 1761 05b5cc6ebe4d2b4197774ee73

उत्तर : 4. "120" व्याख्या :Answer: D) 120 Explanation: K x 3/8 = 141 => K = 376 376 x 32.08/100 = 120

प्र: One lady has 2 children, one of her child is boy, what is the probability of having both are boys ? 1760 05b5cc728e4d2b4197774f72d

प्र: 74.99% of 1299 + 8.98% of 1899 = ? 1759 05b5cc6b0e4d2b4197774d2b2

उत्तर : 3. "1212" व्याख्या :Answer: C) 1212 Explanation: 74.99% of 1299 + 8.98% of 1899 = ? ? = 75 x 1400100 + 9 x 1800100 ? = 1050 + 162? = 1212.

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प्र: An amount doubles itself in 15 years. what is the rate of interest ? 1765 0

उत्तर : 3. "6.66 %"
व्याख्या :
Answer: C) 6.66 % Explanation: Let the principle be Rs. PAs the amount double itself the interest is Rs. P tooSo P = P x r x 15/100=> r = 100/15 = 20/3 % = 6.66 %.

प्र: In a 48 ltr mixture, the ratio of milk and water is 5:3. How much water should be added in the mixture so as the ratio will become 3:5 ? 1764 0

उत्तर : 3. "32 lit"
व्याख्या :
Answer: C) 32 lit Explanation: Given mixture = 48 lit Milk in it = 48 x 5/8 = 30 lit => Water in it = 48 - 30 = 18 lit Let 'L' lit of water is added to make the ratio as 3:5 => 30/(18+L) = 3/5 => 150 = 54 + 3L => L = 32 lit.

प्र: Three friends had dinner at a restaurant. When the bill was received, Akshitha paid 2/3 as much as Veena paid and Veena paid 1/2 as much as Lasya paid. What fraction of the bill did Veena pay ? 1763 0

उत्तर : 3. "3/11"
व्याख्या :
Answer: C) 3/11 Explanation: Let Veena paid x,so Akshitha paid 2x/3 , and Lasya paid 2x,So total bill paid is given byx+(2x/3) +2x = 1, we geti.e. x = 3/11

प्र: A shopkeeper sells two articles at Rs.1000 each, making a profit of 30% on the first article and a loss of 20% on the second article. Find the net profit or loss that he makes ? 1761 0

प्र: If three eighth of a number is 141. What will be the approximately value of 32.08% of this number ? 1761 0

उत्तर : 4. "120"
व्याख्या :
Answer: D) 120 Explanation: K x 3/8 = 141 => K = 376 376 x 32.08/100 = 120

प्र: One lady has 2 children, one of her child is boy, what is the probability of having both are boys ? 1760 0

प्र: 74.99% of 1299 + 8.98% of 1899 = ? 1759 0

उत्तर : 3. "1212"
व्याख्या :
Answer: C) 1212 Explanation: 74.99% of 1299 + 8.98% of 1899 = ? ? = 75 x 1400100 + 9 x 1800100 ? = 1050 + 162? = 1212.