alleryਦੋ ਦੋਸਤਾਂ ਦੀ ਉਮਰ ਅਨੁਪਾਤ 4 : 5 ਵਿੱਚ ਹੈ। 6 ਸਾਲਾਂ ਬਾਅਦ ਇਹ 5 : 6 ਹੋਵੇਗਾ। ਛੋਟੇ ਦੀ ਮੌਜੂਦਾ ਉਮਰ ਹੈ
A28
B24
C30
D20
Answer & Solution
Correct answer: B. 24
(4x + 6)/(5x + 6) = 5/6 ਨੂੰ ਹੱਲ ਕਰਨ ਨਾਲ x = 6 ਮਿਲਦਾ ਹੈ, ਇਸ ਲਈ ਛੋਟਾ 4 x 6 = 24 ਹੁੰਦਾ ਹੈ।
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