Question

4/5 of a cristern is filled in 4 hours . How long will it take to fill the cristern?

Answer 1

we are given that 4/5 part,

so,

convert it into percentage,

so,

4/5 ×100= 80%

so,

4 hours to 80%

therefore,

1 hour = 20%

for

100 % = 5 parts = 20 % × 5

=5 hours...

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