Winnie paid a total of $245 for a skirt, a pair of socks and a pair of slippers. She spent ³₇ of her money on the pair of socks. The pair of slippers cost 3 times as much as the skirt. How much more did she pay for the pair of slippers than the skirt?
Amount that Winnie paid for the pair of socks
= ³₇ x 245 
= $105

Amount that Winnie left after buying the socks
= 245 - 105
= $140

Amount that Winnie paid for the skirt = 1 u
Amount that Winnie paid for the slippers = 3 u

Total amount spent on the skirt and the pair of slippers
= 1 u + 3 u
= 4 u

4 u = 140

1 u = 140 ÷ 4 = 35

Amount that Winnie paid more for the pair of slippers than the skirt
= 3 u - 1 u
= 2 u
= 2 x 35
= $70

Answer(s): $70