Question

Please help, I need this by 10 30 AM

Friend A donated $20.00 plus $1.25 for every lap Chloe swam.

Friend B donated $15.00 plus $2.50 for every lap Chloe swam.

Friend C donated $40.00 plus $1.50 for every lap Chloe swam.

Friend D donated $25.00 plus $1.75 for every lap Chloe swam.


Part A

How many laps did Chloe swim if her four friends raised $450 all together?


Part b

Using the number of laps that Chloe swam from Part A, who donated the most money, Friend B or Friend C?

Answer 1

50 laps

Explanation:

20+1.25x+15+2.5x+40+1.5x+25+1.75x=450

7x+100=450

7x+200-200=450-100

7x=350

7x/7=350/7

x=50