Question

By what percent did

the Howard family's
water bill increase from
March to June? March $80.00, June $110.00.

Answer 1

Increased by 37.5%

Explanation:

1. Approach

First, find the amount by which the bill increased. This can be found by subtracting the final amount from the previous amount. Then set up a proportion to find out the percent by which the bill increased. Remember, a proportion is;

`(part)/(whole) = (percent)/(100)`

2. Find the increase

Subtract the bill in March from the bill in June;

June - March

110 - 80

= 30

3. Find the percent change

In this case, these are the value which will be used;

`(increase)/(March) = (percent)/(100)`

`(30)/(80) = (percent)/(100)`

80 percent = 3000

percent = 37.5