equation word problem
posted by shirley .
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? (Points : 2)

S = 4B
3.6S + 4.25B = 3730
Substitute 4B for S in second equation and solve for B. Insert that value into the first equation and solve for S. Check by inserting both values into the second equation.