SOLUTION: Mercy’s Hospital’s electric bill for September was $2489. This is a decrease of 5% from August electric bill. What was the hospital’s electric bill in August?

Question 1151639: Mercy’s Hospital’s electric bill for September was $2489. This is a decrease of 5% from August electric bill. What was the hospital’s electric bill in August?
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the bill for september was 2489.
this is a decrease of 5% from the bill for august.
let x = the bill for august.
the bill for september is therefore x - .05 * x = .95 * x
you get .95 * x = 2489.
solve for x to get x = 2489 / .95 = 2620.
the bill for august was 2620.
the bill for september was 5% less than this.
2620 - .05 * 2620 = 2489, confirming the solution is correct.
the solution is that the bill for august was $2620.

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