alleryચઢાણ પર જતાં એક લોરીની સરેરાશ ઝડપ 20 કિમી/કલાક છે અને તે જ રસ્તા પરથી નીચે ઊતરતાં 30 કિમી/કલાક છે. સમગ્ર મુસાફરી દરમિયાન સરેરાશ ઝડપ કેટલી?
A22 કિમી/કલાક
B25 કિમી/કલાક
C24 કિમી/કલાક
D26 કિમી/કલાક
Answer & Solution
Correct answer: C. 24 કિમી/કલાક
સરખા અંતર માટે 2 x 20 x 30 / 50 = 24 કિમી/કલાક મળે છે.
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