Question

Tap A fills a tank in 4 hours and tap B fills the tank in 8 hours. How long
take to fill the tank, if both the tapes are open simultaneously​

Answer 1

Answer:

8/3 or 2 2/3

Step-by-step explanation:

time take by tap A to fill a tank = 4 hrs

part filled in 1 hr = 1/4

time taken by tap B to fill a tank = 8 hrs

part filled in 1 hr = 1/8

part filled by both tap A and B in 1 hr= 1/4+1/8

=2/8+1/8

= 3/8

let the number of hours be x.

part filled by both A and B in 1 hr × number of hours = work done

3/8 × x = 1

x=8/3

answer- it will take 8/3 or 2 2/3 hours to fill the tank.

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