alleryদুজন বন্ধুৰ বয়সৰ অনুপাত 4 : 5। 6 বছৰ পিছত ই 5 : 6 হ'ব। সৰুজনৰ বৰ্তমান বয়স হ'ল
A28
B24
C30
D20
Answer & Solution
Correct answer: B. 24
(4x + 6)/(5x + 6) = 5/6 সমাধান কৰিলে পোৱা যায় x = 6, গতিকে সৰুজনৰ বয়স হ'ল 4 x 6 = 24।
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