Problema Solution
A store reduces all of its prices by 5%. Later, it reduces all items by an additional $9. If a calculator was bought for $38.50, find the original price of the calculator.
Answer provided by our tutors
let 'x' be the original price of the calculator
after the 5% reduction the price will be (1 - 0.05)*x = 0.95*x
after the additional $9 reduction 0.95*x - 9 the price is $38.50
0.95*x - 9 = 38.50
x = (38.50 + 9)/0.95
x = $50
the original price of the calculator was $50.