alleryP, Q ਨਾਲੋਂ ਤਿੰਨ ਗੁਣਾ ਕੁਸ਼ਲ ਹੈ, ਅਤੇ ਇਕੱਠੇ ਮਿਲ ਕੇ ਇਹ 15 ਦਿਨਾਂ ਵਿੱਚ ਖਤਮ ਹੋ ਜਾਂਦੇ ਹਨ। ਸਿਰਫ਼ P ਦੀ ਲੋੜ ਹੈ
A30 ਦਿਨ
B20 ਦਿਨ
C15 ਦਿਨ
D45 ਦਿਨ
Answer & Solution
Correct answer: B. 20 ਦਿਨ
3x ਅਤੇ x ਦਰਾਂ ਦੇ ਨਾਲ, 4x = 1/15 ਇਸ ਲਈ x = 1/60, ਅਤੇ P ਦੀ ਦਰ 3/60 = 1/20 ਦਾ ਅਰਥ ਹੈ 20 ਦਿਨ।
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