Question

An automobile tire has two punctures. The first puncture by itself would make the tire

flat in 9 minutes. The second puncture by itself would make the tire flat in 6 minutes.

How long will it take for both punctures together to make the tire flat?​

Answer 1

Answer:

3 min 36 sec

Step-by-step explanation:

=1/9+1/6

=(2+3)÷18

=5÷18

=1/(18÷5)

18/5=3 3/5 minutes=3 minutes 36 seconds