alleryઆઠ કામદારોમાંથી દરેક એક કાર્ય પર 9 કલાક કામ કરે છે. તો કુલ ખર્ચાયેલા માનવ-કલાક કેટલા થાય?
A64
B17
C72
D81
Answer & Solution
Correct answer: C. 72
માનવ-કલાક એટલે કામદારો ગુણ્યા કલાક, તેથી 8 x 9 = 72.
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