Question

17. You sell large and small pictures at a fair. You sell a total of 16 pictures and made a total of

$350. If large pictures sell for $25 and small pictures sell for $20. How many of each did you
sell?

Answer 1

Make a system of equation
Let L be large pictures
Let S be small pictures
You know they add to 16 pictures
You know each cost

(L + S = 16) * 25
25L + 20S = 350
25L + 25S = 400
Subtract (elimination method)
-5S = -50, S = 10
L + 10 = 16, L = 6

Solution: 10 small pictures
6 large pictures