alleryਦੋ ਭੈਣਾਂ ਦੀ ਉਮਰ ਅਨੁਪਾਤ 5 : 7 ਹੈ ਅਤੇ ਚਾਰ ਸਾਲ ਪਹਿਲਾਂ ਜੋੜ 40 ਸੀ। ਵੱਡੀ ਹੁਣ
A26
B28
C20
D24
Answer & Solution
Correct answer: B. 28
ਮੌਜੂਦਾ ਜੋੜ 12 ਹਿੱਸਿਆਂ ਉੱਤੇ 48 ਹੈ, ਇਸ ਲਈ ਇੱਕ ਹਿੱਸਾ 4 ਹੈ ਅਤੇ ਵੱਡਾ ਹਿੱਸਾ 7 x 4 = 28 ਹੈ।
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