Question

please it's very very urgent​

Answer 1

Tap A needed  40 hrs & Tap B needed 24 hrs to fill the swimming pool

Step-by-step explanation:

Both Taps can fill swimming pool in 15 hrs

=> Both taps can fill in 1 hr =  1/15

Both taps can fill in 12 hr = 12/15  = 4/5

swimming pool Remaining to filled  = 1 - 4/5 = 1/5

Tap A fill in 8 hrs  = 1/5

=> Tap A fill in 1 hr = 1/40

=>  Tap A can fill swimming pool  in 40 hrs

tap B can fill swimming pool in 1 hr  = 1/15  - 1/40

= (8 - 3)/120

= 5/120

= 1/24

Tap B can fill swimming pool  in 24 hrs

Tap A needed  40 hrs & Tap B needed 24 hrs to fill the swimming pool

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