alleryਟਾਸਕ P ਅਤੇ Q 4 ਅਤੇ 6 h ਲੈਂਦੇ ਹਨ ਅਤੇ ਇਕੱਠੇ ਚੱਲ ਸਕਦੇ ਹਨ; R ਦੋਹਾਂ ਤੋਂ ਬਾਅਦ 3 h ਲੈਂਦਾ ਹੈ। ਘੱਟੋ-ਘੱਟ ਕੁੱਲ?
A9 h
B8 h
C7 h
D13 h
Answer & Solution
Correct answer: A. 9 h
P ਅਤੇ Q ਇਕੱਠੇ ਚੱਲਣ ਵਿੱਚ 6 ਘੰਟੇ ਲੱਗਦੇ ਹਨ, ਇਸਦੇ ਬਾਅਦ R ਦੇ 3 ਘੰਟੇ, ਕੁੱਲ 9 ਘੰਟੇ।
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