alleryએક પંપ ટાંકીને 5 કલાકમાં ભરે છે, પરંતુ લિકેજ સાથે તેને 6 કલાક લાગે છે. લિકેજ એકલું તેને કેટલા સમયમાં ખાલી કરશે?
A30 કલાક
B11 કલાક
C25 કલાક
D20 કલાક
Answer & Solution
Correct answer: A. 30 કલાક
લિકેજનો દર દર કલાકે 1/5 - 1/6 = 1/30 છે, તેથી ખાલી થવામાં 30 કલાક લાગે છે.
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