Lucy paid a total of $180 for a jacket, a pair of socks and a pair of sport shoes. She spent ⁵₆ of her money on the pair of socks. The pair of sport shoes cost 5 times as much as the jacket. How much more did she pay for the pair of sport shoes than the jacket?
Amount that Lucy paid for the pair of socks
= ⁵₆ x 180 
= $150

Amount that Lucy left after buying the socks
= 180 - 150
= $30

Amount that Lucy paid for the jacket = 1 u
Amount that Lucy paid for the sport shoes = 5 u

Total amount spent on the jacket and the pair of sport shoes
= 1 u + 5 u
= 6 u

6 u = 30

1 u = 30 ÷ 6 = 5

Amount that Lucy paid more for the pair of sport shoes than the jacket
= 5 u - 1 u
= 4 u
= 4 x 5
= $20

Answer(s): $20