Nick bought a washing machine and a portable air-conditioner. The original price of the washing machine was $3000 and the original price of the portable air-conditioner was half the original price of the washing machine. Nick was given a 30% discount on the portable air-conditioner. How much did Nick pay altogether?
Original price of the portable air-conditioner
= 3000 ÷ 2
= $1500

Discounted price of the portable air-conditioner in percent
= 100% - 30%
= 70%

100% of the price of the portable air-conditioner = 1500
1% of the price of the portable air-conditioner = 1500 ÷ 100 = 15
70% of the price of the portable air-conditioner = 70 x 15 = 1050

Discounted price of the portable air-conditioner = $1050

Total amount that Nick paid
= 3000 + 1050
= $4050

Answer(s): $4050