Question

Pls answer this question correct I will surely make you as brainlist surely

with steps ​

Answer 1

Answer:

Option A - 72

Step-by-step explanation:

Given that Pipe A fills tank in 8 hours

So, volume of water filled in one hour = $\frac{1}{8}$ of total volume

Given that Pipe B empties tank in 9 hours

So, volume of water removed in one hour = $\frac{1}{9}$ of total volume

Now, volume of water filled in tank in one hour when both pipes are used

          = $\frac{1}{8} - \frac{1}{9}$ = $\frac{1}{72}$ of total volume of tank

∴ Time taken to fill entire tank = $\frac{1}{\frac{1}{72} }$ hours = $72$ hours

Hope it helps!!! Please mark Brainliest!!!

Answer 2

Option A$\frac{}{}\frac{}{}\frac{}{}\frac{}{}$