Anna paid a total of $210 for a shirt, a pair of socks and a pair of sport shoes. She spent ⁵₇ of her money on the pair of socks. The pair of sport shoes cost 5 times as much as the shirt. How much more did she pay for the pair of sport shoes than the shirt?
Amount that Anna paid for the pair of socks
= ⁵₇ x 210 
= $150

Amount that Anna left after buying the socks
= 210 - 150
= $60

Amount that Anna paid for the shirt = 1 u
Amount that Anna paid for the sport shoes = 5 u

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

6 u = 60

1 u = 60 ÷ 6 = 10

Amount that Anna paid more for the pair of sport shoes than the shirt
= 5 u - 1 u
= 4 u
= 4 x 10
= $40

Answer(s): $40