Question
Peter and Oscar had $60 and $45 respectively. Each of them bought a hoodie and a cardigan at the same price. The cost of the hoodie was 3 times as much as the cardigan. In the end, Peter had 4 times as much money as Oscar. What was the difference between the cost of the cardigan and the hoodie?
4 m

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Peter and Oscar had $60 and $45 respectively. Each of them bought a hoodie and a cardigan at the same price. The cost of the hoodie was 3 times as much as the cardigan. In the end, Peter had 4 times as much money as Oscar. What was the difference between the cost of the cardigan and the hoodie?