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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A. 21 years
B. 18 years
C. 15 years
D. 9 years
A. 10
B. 14
C. 21
D. 35
A. 46%
B. 54%
C. 65%
D. 78%
A. Rs. 360
B. Rs. 600
C. Rs. 900
D. Rs. 1080
A. 2 days
B. 4 days
C. 5 days
D. 6 days
A. 3 days
B. 6 days
C. 7 days
D. None of these
A. 2.78%
B. 5.56%
C. 7.14%
D. 10.20%