Question

Oil flows back and forth between a small and large tank. When oil is moving into the large tank, the flow rate is positive. When oil is moving into the small tank, the flow rate is negative. The large tank begins with 600 gallons of oil. The flow rate is recorded as –4 gallons per minute. After a period of 32 minutes, how much oil has been moved and to which tank?

Answer 1

128 gallons, into the small tank. I think its the second option for the last box, not 100 percent sure but i did the question so yea :D

Explanation:

Answer 2

Flow is given as, F = - 4 gallon per minute into small tank.

( Since, flow is negative )

Volume of oil in large tank, V = 600 gallons.

Now,

Volume of oil has been moved :

`v = F * t\\\\v = -4 \ gallons/min *\ 32\ min\\\\ v = -128\ gallons`

Therefore, 128 gallons of oil has been moved to small tank.

Hence, this is the required solution.