Question

Two pipes together can fill a reservoir in 6 hours and 40 minutes. Find the time each alone will take to fill the reservoir if one of the pipes can fill it in 3 hours less than the other.

Answer 1

\[\frac{AB}{A + B} = t\]

Answer 2

A = Reservoir 1
B = Reservoir 2

A = x
B = x - 3

\[\frac{x(x-3)}{x + (x-3)} =6\frac{2}{3}\]

Answer 3

Solve for x

Answer 4

How did you get 6 ?

Answer 5

It was given in the problem. We still have to find x

Answer 6

okay..

Answer 7

Hang on a sec, I have to re-compute that last part

Answer 8

x = 15
x - 3 = 12

Answer 9

That's what you should get

Answer 10

Okay , I'm trying to comprehend , lol

Answer 11

Where did 15 come from ? how did we solve for x

Answer 12

It's a long story

Answer 13

Hmmm.