Question

if 2/9 of a tank can be filled in 1 minute how many minutes will it takes to fill the rest of the tank?

Answer 1

7/2 minutes required to fill the rest part of the tank.

it is given that, 2/9 of a tank can be filled in 1 minute.

so, tank can be filled completely in 1/(2/9) = 9/2 minutes.

rest part of the tank, we have to fill is (1 - 2/9) = 7/9

from above, tank can be filled completely in 9/2 minutes.

so, 7/9 part of tank can be filled in 9/2 × 7/9 = 7/2 minutes.

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