In 1980, the cost of tuition at a certain private high school was $5850. By 1995, it had risen approximately 55%. What was the approximate cost in 1995?

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Answer 1 · 2018-02-10T17:55:03

See a solution process below:

The formula for determine the cost after an increase is:

#t = c + (c * r)#

Where: #t# is the new total cost: what we are solving for in this problem.

#c# is the old cost: $5850 for this problem.

#r# is rate increase: 55% for this problem. "Percent" or "%" means "out of 100" or "per 100", Therefore 55% can be written as #55/100#.

Substituting and calculating #t# gives:

#t = $5850 + ($5850 * 55/100)#

#t = $5850 + ($321750)/100#

#t = $5850 + $3217.50#

#t = $9067.50#

In 1980, the cost of tuition at a certain private high school was​ $5850. By 1995​, it had risen approximately 55​%. What was the approximate cost in 1995​?