Question 1151639
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.