alleryA ਅਤੇ B 10 ਦਿਨ ਲੈਂਦੇ ਹਨ, B ਅਤੇ C 15 ਦਿਨ ਲੈਂਦੇ ਹਨ, A ਅਤੇ C 12 ਦਿਨ ਲੈਂਦੇ ਹਨ। ਤਿੰਨੋਂ ਮਿਲ ਕੇ ਲੈਂਦੇ ਹਨ।
A9 ਦਿਨ
B6 ਦਿਨ
C7.5 ਦਿਨ
D8 ਦਿਨ
Answer & Solution
Correct answer: D. 8 ਦਿਨ
ਸੰਯੁਕਤ ਦਰ ਦਾ ਦੁੱਗਣਾ 1/10 + 1/15 + 1/12 = 1/4 ਹੈ, ਇਸ ਲਈ ਤਿੰਨੋਂ ਮਿਲ ਕੇ 1/8 ਪ੍ਰਤੀ ਦਿਨ ਕਰਦੇ ਹਨ।
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