Zara spent $240 to buy some boxes of cheese and apple wafers. Each box of cheese wafers cost $8 and each box of apple wafers cost $10. The cheese wafers were packed in boxes of 8 wafers each and the apple wafers were packed in boxes of 5 wafers each. She bought an equal number of cheese wafers and apple wafers.
(a) How many boxes of cheese wafers did she buy?
(b) How many boxes of apple wafers did she buy?
(a)
Total number of cheese wafers and apple wafers is the same.

LCM of 8 and 5 = 40

Number of boxes for 40 cheese wafers
= 40 ÷ 8
= 5

Number of boxes for 40 apple wafers
= 40 ÷ 5
= 8

1 set = 5 boxes of cheese wafers and 8 boxes of apple wafers

Cost of 1 set
= 5 x 8 + 8 x 10
= 40 + 80
= $120

Number of sets
= 240 ÷ 120
= 2

Boxes of cheese wafers
= 2 x 5
= 10

(b)
Boxes of apple wafers
= 2 x 8
= 16

Answer(s): (a) 10; (b) 16