Question

Three taps can fill a tank. Tap 1 alone can fill the tank in 30 minutes. Tap 2 can fill it in 40 minutes while tap 3 can fill it in 60 minutes. If all the three tap are opened together , how long will it take to fill the tank ?​

Answer 1

Answer:

13.333....

Step-by-step explanation:

So Tap 1 fills the tank 1/30 every minute, Tap 2 fills 1/40 every minute and Tap 3 fills 1/60 every minute.

Hence, the 3 taps together will fill 1/30 + 1/40 + 1/60 which is

4/120 + 3/120 + 2/120

= 9/120

= 3/40

The tank gets filled 3/40 every minute so in total, it will take 13.3 minutes roughly to fill the tank.