In 1990, the cost of tuition at a certain private high school was $5780. By 1998, it had risen approximately 79%. What was the approximate cost in 1998?

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Answer 1 · 2018-01-18T22:45:34

#$10,346.2#

We need to find what #79%# of #$5,780# is.

If we translate this question into "math speak" we get #0.79 xx 5,780# which is #4,566.2#

That doesn't mean that the cost of tuition in #1998# was #$4,566.2#. That would be less than the cost in #1990# and we're looking for the increase.

No, what we just found is the increase. Once we add that to the original amount, then we have the new cost, which is #$10,346.2#

In 1990​, the cost of tuition at a certain private high school was​ $5780. By 1998​, it had risen approximately 79​%. What was the approximate cost in 1998​?