Question

Ming got a 12% raise in her salary from last year. This year she is earning S134,400. How much did she make last year?

Answer 1

We can use the following formula to solve this problem:

`p=(n-o)/(o)`

Where p is the percent given as a decimal, n is the new earning and o is the original one. Replace for the given values and then solve for o:

`\begin{gathered} 0.12=(134400-o)/(o) \\ 0.12o=134400-o \\ o+0.12o=134400 \\ 1.12o=134400 \\ o=(134400)/(1.12) \\ o=120000 \end{gathered}`

It means that she made $120000 last year