Two pumps are filling large vats of liquid. One vat is empty, and the pump is filling it at a rate of 6 gallons per minute. The other is already filled with 10 gallons, and it is continuing to fill at a rate of 4 gallons per minute. Write an equation to show when the two vats will have an equal amount of liquid.

1 answer

Let's assume that after t minutes, the two vats will have an equal amount of liquid.

The amount of liquid in the first vat after t minutes will be 6t (since it is filling at a rate of 6 gallons per minute).

The amount of liquid in the second vat after t minutes will be 10 + 4t (since it already has 10 gallons and is filling at a rate of 4 gallons per minute).

To find when the two vats will have an equal amount of liquid, we can set these two expressions equal to each other:

6t = 10 + 4t

Simplifying this equation, we get:

2t = 10

t = 5

Therefore, the two vats will have an equal amount of liquid after 5 minutes.