allery5 km/h वेगाने चालणारा एक मुलगा 6 minutes उशिरा पोहोचतो, पण 6 km/h वेगाने चालल्यास तो 6 minutes लवकर पोहोचतो. त्याचे गंतव्यस्थान किती अंतरावर आहे?
A4 km
B6 km
C8 km
D5 km
Answer & Solution
Correct answer: B. 6 km
d/5 - d/6 = 12 min = 0.2 h वरून d/30 = 0.2 मिळते, म्हणून d = 6 km.
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