Asked by Chelsea

An accountant earns $3180 per month after receiving a 8.5% raise. What was the accountant's monthly income before the raise? Round your answer to the nearest cent.
What i thought you did was 3180*8.5%=270.3
3180-270.30=2909.70, but it says its not correct. Any ideas on how to do this
Answered by Ms. Sue
Let x = the income before the raise. The accountant is making 1.085 more now.

1.085x = 3180
x = 2930.88

Answered by Chelsea
I understand how to set it up I just don't understand why its 1.085. I thought it was just .085. why is the 1 there?
Answered by Ms. Sue
The 1 is 100%. The accountant is making 100% of his previous salary plus 8.5% more.

100% + 8.5% = 108.5% = 1.085

Answered by Kayla
Oh Okay now i understand why the 1 is there! Thank you so much!!!
Answered by Ms. Sue
You're very welcome, Chelsea/Kayla.

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