alleryએક પાઇપ એકલી એક ટાંકીને 15 મિનિટમાં ભરે છે; બીજી પાઇપ સાથે મળીને તે 6 મિનિટ લે છે. બીજી પાઇપ એકલી કેટલો સમય લેશે?
A10 મિનિટ
B12 મિનિટ
C8 મિનિટ
D9 મિનિટ
Answer & Solution
Correct answer: A. 10 મિનિટ
બીજી પાઇપનો દર 1/6 - 1/15 = 3/30 = 1/10 છે, તેથી 10 મિનિટ લાગે.
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