If 4/5th of the cistern is filled in 1 minute,how much more time will be required to fill the rest of it
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4/5 of whole is in 1 min
for whole time will be 5×1/4 = 5/4
time for filling rest = total time - previous time taken
= 5/4 - 1 = 1/4 min
4/5 of whole is in 1 min
for whole time will be 5×1/4 = 5/4
time for filling rest = total time - previous time taken
= 5/4 - 1 = 1/4 min
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