An electric bill in May was $112.00. In June, the bill was $163.00. What is the percent of increase, rounded to the nearest tenth?

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Answer 1 · 2016-10-28T22:32:55

There was a #45.5%# increase in Junes electric bill compared to Mays electric bill.

The formula for percent change over two periods of time is:

#p = (N - O) / O * 100# where #p# is the percent change, #N# is the new value and #O# is the old value.

Substituting what is known gives:

#p = (163 - 112) / 112 * 100#

#p = 51/112 * 100#

#p = 0.455 * 100#

#p = 45.5#