alleryਇੱਕ ਸਾਈਕਲ 40 ਕਿਲੋਮੀਟਰ/ਘੰਟਾ ਅਤੇ 60 ਕਿਲੋਮੀਟਰ/ਘੰਟਾ ਦੀ ਰਫ਼ਤਾਰ ਨਾਲ ਦੋ ਬਰਾਬਰ ਹਿੱਸਿਆਂ ਨੂੰ ਕਵਰ ਕਰਦਾ ਹੈ। ਦੋਵਾਂ 'ਤੇ ਇਸਦੀ ਔਸਤ ਗਤੀ ਕਿੰਨੀ ਹੈ?
A50 km/h
B45 km/h
C48 km/h
D52 km/h
Answer & Solution
Correct answer: C. 48 km/h
ਬਰਾਬਰ ਦੂਰੀਆਂ ਲਈ ਔਸਤ 2ab/(a+b) = 2 x 40 x 60 / 100 = 48 km/h ਹੈ।
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