Question

a tank can empty in 20 hrs while another tank empty in 15hrs.if both tap open simultaneously how long it take to empty the full
tank​

Answer 1

Answer:

time taken will be :-

➡️ 1/20 + 1/15

➡️ 7/60

therefore, time taken by both will be :-

➡️ 60 / 7

➡️ 8.57 hrs. ans.

Explanation:

hope it helps ✔✔