Question

A car dealership sells suv's and passenger cars. For a recent year, 90 more suv's were sold than passenger cars. If a total of 510 vehicles were sold, determine the number of each type of vehicle sold.

Answer 1

300 SUVs were sold.

210 Passenger cars were sold.

Explanation:

Let S denote the amount of SUVs sold and let P denote the amount of passenger cars sold.

The total amount of vehicles sold was 510, so:

`S+P=510`

90 more SUVs were sold than passenger cars. In other words:

`S=90+P`

We know have a system of equations. We can solve it buy substituting the second equation into the first. Thus:

`90+P+P=510`

Combine like terms:

`2P+90=510`

Subtract 90 from both sides:

`2P=420`

Divide both sides by 2:

`P=210`

So, the 210 passenger cars were sold.

This means that 210+90=300 SUVs were sold.

And we're done!