Question

Alice got a 8% rise in salary from last year. This year she is earning $ 40,120. How much did she make last year?

Answer 1

Explanation:

Let x be last year's salary.

100%x + 8/100 x = 40120

100x/(100) + 8/100x = 40120

108x/100 = 40120

1.08x = 40120

x = 40120/1.08

x = 37148.14

Now if you take 8% of 37148.14 = 2971.85

And add it to 37148.14

You should get the current earning 40119.99

You are within a penny of the same answer. This question will not work out evenly because 1.08 does not divide evenly into 40120.