allery30 km/h वेगाने गेल्यास एक विद्यार्थी शाळेत 5 minutes उशिरा पोहोचतो आणि 40 km/h वेगाने गेल्यास 5 minutes लवकर पोहोचतो. शाळा किती अंतरावर आहे?
A20 km
B25 km
C24 km
D18 km
Answer & Solution
Correct answer: A. 20 km
d/30 - d/40 = 10 min = 1/6 h वरून d/120 = 1/6 मिळते, म्हणून d = 20 km.
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