Question

Emily buys a toaster for 10%off if she pays 36 then what was the original price

Answer 1

x-0.1x=36

where x is the original price
0.1x is the discount (10% of the original price)
36 is the price paid

x-0.1x=36
0.9x=36
-----   ----
0.9     0.9
x=40

The original price is $40.00

Answer 2

The original price was 40 dollars because 10 percent of 40 is 4 and 10 percent off will be 36 dollars