The average age of boys in the class is twice the number of girls in the class. If the ratio of boys and girls in the class of 36 be 5:1, what is the total of the ages of the boys?
A. 490
B. 196
C. 42
D. 360
E. 240
সঠিক উত্তরঃ
D.
360
Explanation:
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