40 km/h पर एक यात्रा 1 h देर से समाप्त होती है; 60 km/h, 1 h जल्दी। निर्धारित अवधि?
A6 घंटे
B5 घंटे
C3 घंटे
D4 घंटे
Answer & Solution
Correct answer: B. 5 घंटे
दूरी d के लिए, d/40 − d/60 = 2 d = 240 किमी देता है, इसलिए निर्धारित अवधि 240 ÷ 40 − 1 = 5 घंटे है।
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