Answer: 200 dollars
The first step that we should do is divide 500 into 10 separate parts. Each part is 10 percent of the price. 500 divided by 10 is 50.
This means that Frank saved 50 x 7 and Noel saved 50 x 3.
50 x 7 is 350 and 50 x 3 is 150.
Frank saved 350 , while Noel saved 150.To check if we are correct we can add 350 and 150, which is 500 that brings us back to our original answer. Next we must subtract Franks total from Noel to figure out the difference.
350-150 is 200.
This means that Frank saved 200 more dollars than Noel.
I hope this helped & Good Luck <3 !!!