System of equations word problems

Question

The frosty ice cream shop so Sundays for two dollars and Banana splits For three dollars. On a hot summer day the shop sold eight more Sundays them banana splits and made $156. You systems of equations to determine the number of B, banana splits and S, the number of Sundays sold.

Answer 1

156 = 2s + 3b

s = b + 8

Substitute:

156 = 2(b + 8) + 3b

156 = 2b + 16 + 3b

5b = 140

b = 28

s = 36