Riordan bought a refrigerator and a washing machine. The original price of the refrigerator was $3600 and the original price of the washing machine was half the original price of the refrigerator. Riordan was given a 33% discount on the washing machine. How much did Riordan pay altogether?
Original price of the washing machine
= 3600 ÷ 2
= $1800

Discounted price of the washing machine in percent
= 100% - 33%
= 67%

100% of the price of the washing machine = 1800
1% of the price of the washing machine = 1800 ÷ 100 = 18
67% of the price of the washing machine = 67 x 18 = 1206

Discounted price of the washing machine = $1206

Total amount that Riordan paid
= 3600 + 1206
= $4806

Answer(s): $4806