f one pump can inflate an air mattress in 21 minutes and a second pump can inflate the same mattress in 42 minutes, find the am

Question

2 years ago

7

ount of time that would be needed for the two pumps working together to inflate the mattress.

1 answer:

Schach [20] · Answer 1 · 2022-01-13T03:54:24+03:00

3 0

Answer:

14 minutes

Step-by-step explanation:

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Well, what I do for these problems is do 1/x with x being the amount of time given.

1/21+1/42=3/42

3/42=1/14

Together, they would take 14 minutes!

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

f one pump can inflate an air mattress in 21 minutes and a second pump can inflate the same mattress in 42 ​minutes, find the am