alleryA એક કામ 16 દિવસમાં કરે છે, B 8 દિવસમાં કરે છે. A એકલો 4 દિવસ કામ કરે છે, પછી B જોડાય છે. શરૂઆતથી કુલ કેટલો સમય લાગ્યો?
A7 દિવસ
B6 દિવસ
C9 દિવસ
D8 દિવસ
Answer & Solution
Correct answer: D. 8 દિવસ
A એકલો 1/4 ભાગ કામ કરે છે; બાકીનું 3/4 ભાગ કામ દરરોજ 3/16 ના દરે પૂર્ણ થતાં 4 દિવસ લાગે છે, તેથી કુલ મળીને 8 દિવસ થાય છે.
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