alleryA એક કામ 15 દિવસમાં અને B 10 દિવસમાં કરી શકે છે. A એકલો 5 દિવસ કામ કરે છે, પછી B જોડાય છે. B, A સાથે કેટલા દિવસ કામ કરે છે?
A4 દિવસ
B6 દિવસ
C3 દિવસ
D5 દિવસ
Answer & Solution
Correct answer: A. 4 દિવસ
A એકલો 5/15 = 1/3 કામ કરે છે; બાકીનું 2/3 કામ પ્રતિ દિવસ 1/6 ના દરે 4 દિવસ લે છે.
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