Question

In December, an office spent $480, or 15% of its non-personnel expenses that month, for postage. Wha t were its total non-personnel expenses for December?

Answer 1

Let x dollars denote total non-personal expense for December
Then office spend $480 or 15% of its total non-personal expense for postage so,
15% of x=480
x*15/100=480
x=480*100/15
x=$3200
Thus total non-personal expense for December are $3200.