alleryએક ડ્રાઇવર 40 કિમી/કલાકની ઝડપે 3 કલાક અને પછી 60 કિમી/કલાકની ઝડપે 2 કલાક વાહન ચલાવે છે. સરેરાશ ઝડપ કેટલી છે?
A46 કિમી/કલાક
B48 કિમી/કલાક
C50 કિમી/કલાક
D52 કિમી/કલાક
Answer & Solution
Correct answer: B. 48 કિમી/કલાક
અંતર 5 કલાકમાં 120 + 120 = 240 કિમી છે, તેથી સરેરાશ 48 કિમી/કલાક છે.
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