alleryਇੱਕ ਟਰੱਕ 6 ਕਿਲੋਮੀਟਰ/ਘੰਟਾ ਦੀ ਰਫ਼ਤਾਰ ਨਾਲ 72 ਕਿਲੋਮੀਟਰ ਦੇ ਰਸਤੇ 'ਤੇ 1 ਵਾਧੂ ਘੰਟਾ ਲੈਂਦਾ ਹੈ। ਇਸਦੀ ਅਸਲ ਗਤੀ ਕੀ ਸੀ?
A20 km/h
B24 km/h
C30 km/h
D36 km/h
Answer & Solution
Correct answer: B. 24 km/h
72/(s-6) - 72/s = 1 s(s-6) = 432 ਦਿੰਦਾ ਹੈ, ਇਸ ਲਈ s = 24 km/h।
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