Elitmus Exam Numerical Ability Pipes and Cistern

a tank has a leak which would empty the completely filled tank in 10hrs.if the tank is full of water and a tap is opened which admits4 lts of water per min in the tan,the leak takes 15hrs to empty the tank.how many ltr of water does the tank holds?

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Elitmus Other Question
a tank is filled with two taps.the first tap can fill the tank completely in 45min and the second tap can empty the full tank in 1 hr.if both the taps are opened alternately for one min,then in how many hrs the empty tank will be filled completely? a swimming pool has 3 drain pipes .the first two pipes a and b operating simultaneously can empty the pool in half the time than c,the 3rd pipe alone takes to empty it.pipe a working alone takes half the time taken by pipe b.together they take 6 hr 40min to empty the pool.time taken by pipe a to empty the pool is how much?