alleryA आणि B यांच्या वयाचे गुणोत्तर 5 : 3 आहे. 9 वर्षांनंतर हे गुणोत्तर 3 : 2 होईल. तर A चे आजचे वय किती?
A30
B27
C36
D45
Answer & Solution
Correct answer: D. 45
(5x + 9)/(3x + 9) = 3/2 सोडवल्यास x = 9 मिळते, म्हणून A चे वय 5 x 9 = 45 आहे.
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