math
posted by Shea Collins .
A Cold Stone Creamery ice cream shop sells sundaes for $3.60 and banana splits for $4.25. The shop sells four times as many sundaes as banana splits. If total sales amounted to $3,730 last weekend, how many banana splits were sold?

s = sundaes
b = banana splits
s = 4b shop sels 4 times as many sundaes as banana splits
3.60(s) +4.25(b) = 3730
replace s with 4b
3.60(4b) + 4.25(b) =3730
Solve for b and then find s from 4 times b.