The average age of three boys is 15 years. If their ages are in a ratio 3: 5: 7, the age of the elder boy is:
A. 21 years
B. 18 years
C. 15 years
D. 9 years
Correct Answer: A (21 years)
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The average age of three boys is 15 years. If their ages are in a ratio 3: 5: 7, the age of the youngest boy is:
A. 21 years
B. 18 years
C. 15 years
D. 9 years
Correct Answer: D (9 years)
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What is the price of 45 eggs if one dozen eggs cost Rs. 240?
A. Rs. 360
B. Rs. 600
C. Rs. 900
D. Rs. 1080
Correct Answer: C (Rs. 900)
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Farhan can do a work in 6 days, while Uzair in 9 days. How many days will both take together to complete the work?
A. 2 days
B. 4 days
C. 5 days
D. 6 days
Correct Answer: B (4 days)
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Bilal can finish a work in 10 days. Jalal is twice as efficient as Bilal. If they work together, how many days will the work be finished?
A. 3 days
B. 6 days
C. 7 days
D. None of these
Correct Answer: A. (3 days)
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What is the ratio of 2.8 meters to 40 centimeters?
A. 1:7
B. 7:1
C. 1:40
D. 40:1
Correct Answer: B (7:1)
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The ratio of the son’s age to the father’s age is 1 ∶ 4. The product of their ages is 196. The ratio of their ages after 5 years will be?
A. 4 ∶ 13
B. 3 ∶ 10
C. 4 ∶ 11
D. 5 ∶ 14
Correct Answer: C (4 ∶ 11)
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