Question

Last year, Maria earned $310 per week. This year, her salary increased to $331 per week. By what percent did her salary increase? Round the answer to the nearest tenth.

Answer 1

D. 6.8%

1) Since Maria had a wage of $310 and it was increased to $331 then we can find out how much was that increase by setting a proportion:

$ %

310--------------100

331 ------------ x

2) According to the Proportion property we can cross multiply those numbers

310x= 331 * 100

310x = 33100 Divide both sides by 310

x= 106.77%

3) Subtracting 100% from 106.77 w

100-106.77 = 6.77%

6.77% rounding up to the nearest tenth is 6.8