alleryA, B અને C એકલા એક કામ અનુક્રમે 30, 20 અને 60 દિવસમાં પૂરું કરી શકે છે. ત્રણેયને સાથે મળીને જરૂર પડશે:
A12 દિવસ
B8 દિવસ
C10 દિવસ
D15 દિવસ
Answer & Solution
Correct answer: C. 10 દિવસ
દૈનિક કાર્ય (2 + 3 + 1)/60 = 6/60 = કામનો 1/10 ભાગ છે, તેથી 10 દિવસ.
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