Pamela paid a total of $168 for a cardigan, a pair of socks and a pair of flippers. She spent ²₇ of her money on the pair of socks. The pair of flippers cost 3 times as much as the cardigan. How much more did she pay for the pair of flippers than the cardigan?
Amount that Pamela paid for the pair of socks
= ²₇ x 168 
= $48

Amount that Pamela left after buying the socks
= 168 - 48
= $120

Amount that Pamela paid for the cardigan = 1 u
Amount that Pamela paid for the flippers = 3 u

Total amount spent on the cardigan and the pair of flippers
= 1 u + 3 u
= 4 u

4 u = 120

1 u = 120 ÷ 4 = 30

Amount that Pamela paid more for the pair of flippers than the cardigan
= 3 u - 1 u
= 2 u
= 2 x 30
= $60

Answer(s): $60