alleryदोन मित्रांच्या वयाचे गुणोत्तर 4 : 5 आहे. 6 वर्षांनंतर ते 5 : 6 होईल. तर लहान मित्राचे आजचे वय किती आहे?
A28
B24
C30
D20
Answer & Solution
Correct answer: B. 24
(4x + 6)/(5x + 6) = 5/6 सोडवल्यास x = 6 मिळते, म्हणून लहान मित्राचे वय 4 x 6 = 24 आहे.
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