alleryA ਅਤੇ B ਦੀ ਉਮਰ 5 : 3 ਹੈ। 9 ਸਾਲਾਂ ਵਿੱਚ ਅਨੁਪਾਤ 3 : 2 ਬਣ ਜਾਂਦਾ ਹੈ। A ਦੀ ਮੌਜੂਦਾ ਉਮਰ ਹੈ
A30
B27
C36
D45
Answer & Solution
Correct answer: D. 45
(5x + 9)/(3x + 9) = 3/2 ਨੂੰ ਹੱਲ ਕਰਨ ਨਾਲ x = 9 ਮਿਲਦਾ ਹੈ, ਇਸ ਲਈ A 5 x 9 = 45 ਹੈ।
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