What is the increase as a percent given the price of gasoline increased from 93.9 cents to 99.9 cents?

1 Answer
May 16, 2017

Answer:

The increase is #6.4%# to 1 decimal place.

Explanation:

To calculate a percent change, whether it is an increase or a decrease, you use the following method:

Find the amount of change: #99.9-93.9 = 6c#

Write the change as a fraction, using the STARTING amount as the denominator:

#6/93.9#

Make this into a percent by multiplying by #100%#

#100%# is the same as #1#

#100% = 100/100 =1#

Multiplying by #1# does not change the value of a number, only what it looks like:

#6/93.9 xx 100%#

#= 6.3898%#