alleryएक वाहन 10 km लांबीच्या रस्त्यापैकी दोन पंचमांश अंतर 20 km/h वेगाने आणि उर्वरित अंतर 30 km/h वेगाने पार करते. सरासरी वेग किती?
A25 km/h
B26 km/h
C28 km/h
D24 km/h
Answer & Solution
Correct answer: A. 25 km/h
20 वेगाने 4 km साठी 0.2 h लागतात आणि 30 वेगाने 6 km साठी 0.2 h लागतात, म्हणून 0.4 h मध्ये 10 km म्हणजे 25 km/h.
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