Tommy bought a laptop and a portable air-conditioner. The original price of the laptop was $3000 and the original price of the portable air-conditioner was half the original price of the laptop. Tommy was given a 37% discount on the portable air-conditioner. How much did Tommy pay altogether?
Original price of the portable air-conditioner
= 3000 ÷ 2
= $1500

Discounted price of the portable air-conditioner in percent
= 100% - 37%
= 63%

100% of the price of the portable air-conditioner = 1500
1% of the price of the portable air-conditioner = 1500 ÷ 100 = 15
63% of the price of the portable air-conditioner = 63 x 15 = 945

Discounted price of the portable air-conditioner = $945

Total amount that Tommy paid
= 3000 + 945
= $3945

Answer(s): $3945