allery30 ਕਿਲੋਮੀਟਰ/ਹੈਕਟਰ ਦੀ ਰਫ਼ਤਾਰ ਨਾਲ ਵਿਦਿਆਰਥੀ 5 ਮਿੰਟ ਦੇਰ ਨਾਲ ਅਤੇ 40 ਕਿਲੋਮੀਟਰ/ਹੈਕਟਰ ਦੀ ਰਫ਼ਤਾਰ ਨਾਲ 5 ਮਿੰਟ ਪਹਿਲਾਂ ਸਕੂਲ ਪਹੁੰਚਦਾ ਹੈ। ਸਕੂਲ ਕਿੰਨੀ ਦੂਰ ਹੈ?
A20 km
B25 km
C24 km
D18 km
Answer & Solution
Correct answer: A. 20 km
d/30 - d/40 = 10 ਘੱਟੋ-ਘੱਟ = 1/6 h ਦਿੰਦਾ ਹੈ d/120 = 1/6, ਇਸ ਲਈ d = 20 ਕਿਲੋਮੀਟਰ।
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