alleryएक लड़का 5 km/h की चाल से चलते हुए 6 मिनट देरी से पहुँचता है, लेकिन 6 km/h की चाल से चलने पर वह 6 मिनट पहले पहुँच जाता है। उसका गंतव्य कितनी दूर है?
A4 km
B6 km
C8 km
D5 km
Answer & Solution
Correct answer: B. 6 km
d/5 - d/6 = 12 मिनट = 0.2 घंटा, जिससे d/30 = 0.2 प्राप्त होता है, अतः d = 6 km।
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