alleryએક સવાર પ્રથમ અડધા સમય માટે 40 કિમી/કલાક અને બીજા અડધા સમય માટે 60 કિમી/કલાકની ઝડપ રાખે છે. સરેરાશ ઝડપ કેટલી છે?
A48 કિમી/કલાક
B50 કિમી/કલાક
C54 કિમી/કલાક
D52 કિમી/કલાક
Answer & Solution
Correct answer: B. 50 કિમી/કલાક
સમાન સમય હોવાથી સરેરાશ ઝડપ એ સાદો મધ્યક છે, (40 + 60) / 2 = 50 કિમી/કલાક.
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