Question

A man realizes he lost the detailed receipt from the store and only has the credit card receipt with the after-tax total. If the after-tax total was $1,814.31, and the tax rate in the area is 6.1%, what was the pre-tax subtotal?

Answer 1

For the pre-rax subtotal x you have this equation

x + 0.074x = 408.12 dollars.

x*(1 + 0.074) = 408.12

1.074x = 408.12 ====> x = 408.12%2F1.074. 408.12/1.074

Explanation: