Two identical taps fill 2/5 of a tank in 20 minutes.when one of the taps goes dry n how many minutes will the remaining one tap fill the rest of the tank?

Two identical taps fill 2/5 of a tank in 20 minutes.when one of the taps goes dry n how many minutes will the remaining one tap fill the rest of the tank? Correct Answer 60 min

2 taps can fill in 20 minutes = 2/5th 1 tap can fill in 20 minutes = 1/5th. remaining portion to be filled up = 1 - 2/5 = 3/5. 1/5th can be filled by 1 tap in 20 mins 3/5th can be filled by 1 tap in 20x3 mins = 60 minutes. (ans)
Bissoy MCQ

Related Questions

A water tank has two taps (Tap-1 and Tap-2) . Tap -1 can fill a tank in 8 hours and Tap-2 can empty the tank in 16 hours . How long will they take to fill the tank if both taps are opened simultaneously but Tap-2 is closed after 8 hours ?
A water tank has two taps ( Tap-1 and Tap-2) : Tap-1 can fill a tank in 8 hours and Tap-2 can empty the tank in 16 hours . How long will they take to fill the tank if both taps are opened simultaneously but Tap -2 is closed after 8 hours?
A water tank has two taps (Tap1 -Tap2) . Tap -1 can fill a tank in 8 hours and Tap- 2 can empty the tank in 16 hours. How long will they take to fill the tank if both taps are opened simultaneously but tap-2 is closed after 8 hours?
A tank can be filled by a tap in 20 minutes and by another tap in 60 minutes . Both the taps are kept open for 10 minutes and then the first tap is shut off. After this , the tank will be completely filled in what time ?
A tank can be filled by a tap in 20 minutes and by another tap in 60 minutes . Both the taps are kept open for 10 minutes and then the first tap is shut off. After this, the tank will be completely filled in what time?
A tap can fill the tank in 15 minutes and another can empty it in 5 minutes. If the tank is already half -full and both the taps are opened together , how many minutes will the tank take to be emptied?
A tap can fill the tank in 15 minutes and another can empty it in 8 minutes. If the tank is already half-full and both the taps are opened together, how many minutes will the tank take to be emptied
Two taps A and B can fill a tank in 5 hours and 20 hours respectively. If both the taps are open then due to a leakage, it took 30 minutes more to fill the tank. If the tank is full, how long will it take for the leakage alone to empty the tank ?
Two taps X and Y can fill a tank in 15 hours and 20 hours respectively. If the two taps are opened at 2 p.m., then at what time (in p.m.) should the tap X be closed to completely fill the tank at exactly 2 a.m.?
A tap can fill a tank in 15 minutes and another can empty it in 8 minutes, If the tank is already half full and both taps are opened together, the tank will be: