alleryA এবং B-এর বয়সের অনুপাত 5 : 3। 9 বছর পর অনুপাতটি 3 : 2 হয়। A-এর বর্তমান বয়স হল
A30
B27
C36
D45
Answer & Solution
Correct answer: D. 45
(5x + 9)/(3x + 9) = 3/2 সমাধান করে পাওয়া যায় x = 9, সুতরাং A-এর বয়স 5 x 9 = 45।
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