Charles paid $8.70 of the bill.
The first way we can find this is:
= Proportion that Charles paid for x Cost of pizza
= 3/5 x 14.50
= 43.5 / 5
= $8.70
The second way is:
= Cost of Pizza - Proportion that others paid for
= 14.50 - ( (1 - 3/5) x 14.50)
= 14.50 - ( 2/5 x 14.50)
= 14.50 - 5.80
= $8.70
In conclusion, Charles paid $8.70 out of the total bill for the pizza.
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