Question

pls answer
it's a questions of proportion​

Answer 1

Answer:

5/2 hours

Step-by-step explanation:

Let the capacity of the tank be x.

First we obtain the rate for each Tap (in units of volume per hour):

Tap A:  x/3

Tap B:  x/5

Tap C:  x/15/2=2x/15

Then the total rate would be:

A + B - C =x/3+x/5-2x/15

               =5x+3x-2x/15

               =6x/15

               =2x/5  units of volume/hr

               =5/2x hr/units of volume

As X is the capacity of 1 full deposit we have:

5/2x*x/1

=5/2 hours for the complete filling of the tank.