Valen and Michael went to buy massage chairs at a sale. The usual price of 1 massage chair was $200 each.

SALE
Buy 1 massage chair at 15% discount
Buy 2 or more massage chairs at 30% discount each

1. Valen bought 1 massage chair. How much did he pay?
2. What is the maximum number of massage chairs Michael can buy if he has $8000?

(a)
Discounted price of 1 massage chair in percent if only 1 was bought
= 100% - 15%
= 85%

100% of 1 massage chair = 200
1% of 1 massage chair = 200 ÷ 100 = 2
85% of 1 massage chair = 85 x 2 = 170 

Amount that Valen paid for 1 massage chair = $170

(b)
Discounted price of 1 massage chair in percent if more than 1 was bought
= 100% - 30%
= 70%

70% of 1 massage chair = 70 x 2 = 140

Amount that Michael paid for 1 massage chair = $140

Maximum number of massage chairs that Michael can buy if he has $8000
= 8000 ÷ 140
= 57 r 20

Answer(s): (a) $170; (b) 57