Question

Solve 3 question fast in full solution

Answer 1

download solution from online as they are too pong

Answer 2

Hi ,

Tap 1 fills the tank in 20 minutes

Tap 1 can fill 1/20 th part in 1 minute

Tap 2 fill the tank in 12 minutes

Tap 2 fill 1/12 th part in one minute

If both taps are open together

they can fill the part of the tank

= 1/20 + 1/12

= ( 12 + 20 )/ 240

= 32 / 240

= 4/30

= 2 / 15

2/15 th part in one minute

Therefore ,

Tank can be full in 15/2 minutes

means

7.5 minutes.

I hope this helps you.

:)