Sarah completed 3 times as many laps of the oval as Joe. Sarah completed 18 laps. How many more laps did Sarah complete than Joe?

Question

Sarah completed 3 times as many laps of the oval as Joe. Sarah completed 18 laps. How many more laps did Sarah complete than Joe?

Answer 1

Here's what we know:

s = 3j, where s is Sarah, and j is Joe.

s = 18

 

Now we just start solving:

18 = 3j

Divide both sides by 3:

6 = j

 

Our final question is how many more did Sarah do, so:

18 - 6 = 12

 

Sarah completed 12 more laps than Joe.