Answer:
Kayla and Rachel raised $8.39, Francesca raised $18.89.
Explanation:
Knowing that $35.67 is the total amount raised, that Rachel and Kayla raised the same amount (x) each, and that Francesca raised $10.50 more than them (x + 10.50), then the equation would look like:
35.67 = x + x + (x + 10.50)
or
35.67 = 3x + 10.50
From here, you can solve algebraically.
Isolate the variable by subtracting 10.50 from both sides
25.17 = 3x
Then, find X by dividing both sides by 3:
x = 8.39
Knowing that Kayla and Rachel raised $8.39 each, to find Francesca's contribution you can either:
A) Subtract Kayla and Rachel's contributions from the total amount:
35.67 - 8.39 - 8.39 = 18.89
or
B) Add $10.50 to the amount that Kayla and Rachel raised:
8.39 + 10.50 = 18.89