Question

Paulo works part time in a store every month. His monthly salary increases by the same amount every year. Three years ago, Paulo's monthly salary was two thousand seven hundred eighty-three dollars. Twelve years from now Paulo's monthly salary will be approximately eight thousand thirty-eight dollars. What will Paulo’s monthly salary be this year? Show all of your mathematical thinking.

Answer 1

Answer:
`\$3834`

Explanation:

Three years ago Paulo's monthly salary was
`\$2783`

Twelve years from now Paulo's salary will be
`\$8038`

Suppose current salary is
`\$ x`

and Yearly increment is
`\$y`

So,

`\Rightarrow x-3y=2783\quad \ldots(i)`

and
`\Rightarrow x+12y=8038\quad \ldots(ii)`

From (i) and (ii) we get

`\Rightarrow 15y=5255`

`\Rightarrow y=350.33`

and
`x=2783+3* 350.33`

`x=3834`

So, monthly salary this year is
`\$3834`