Question

A customer's monthly water bill was $75.74. Due to a rate increase, her monthly bill now $79.86. To the nearest tenth of a percent, by what percent did the amount of the customer's water bill increase? A) 4.1% B) 5.1% C) 5.2% D) 5.4%

Answer 1

Answer:

Option D) 5.4%

Step-by-step explanation:

we know that

$75.74 ----> represent the 100%

so

using proportion

Find the percentage that the amount of the customer's water bill increase

Let

x -----> the percentage that increase

$75.74/100%=($79.86-$75.74)/x

$75.74/100%=($4.12)/x

x=100*4.12/75.74

x=5.4%