Gillian paid $28 for one jacket and one cardigan. The cardigan costs 3 times as much as the jacket.
- How much did the jacket cost?
- How much more did the cardigan cost than the jacket?
(a)
Cost of the jacket = 1 u
Cost of the cardigan = 3 u
Total cost of the jacket and the cardigan
= 1 u + 3 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
Cost of the jacket = $7
(b)
Cost of the cardigan more than the jacket
= 3 u - 1 u
= 2 u
= 2 x 7
= $14
Answer(s): (a) $7; (b) $14