Question

A water tank initially contained 111 liters of water. It is then filled with more water, at a constant rate of 9 liters per minute.

How many minutes have passed, m, when the tank contains 194 liters? Round to the nearest hundredth.

Answer 1

9.22 minutes

Explanation:

You could use the form y=mx + b to find this equation

y will represent the total liters

x will represent the total number of minutes

b will represent the initial number of liters in the beginning

1. Plug 194 in for y, plug 9 in for m, put 111 in place of b

The equation should look be:
`194 = 9x + 111`

2. Solve the equation

3. Subtract 111 on both sides. The equation would now be:
`83 = 9x`

4. Divide both sides by 9 (to get x by itself).
`(83)/(9) = 9.22222222`

5. Round to the nearest hundredth place to get 9. 22 minutes