At a shop, Xylium paid $46 for 1 eraser and 5 cards. The eraser cost $4 more than each card.
- How much is 1 card?
- How much is 1 eraser?
(a)
Cost of 1 card = 1 u
Cost of 5 cards = 5 u
Cost of 1 eraser = 1 u + 4
Total cost of 1 eraser and 5 cards
= 5 u + 1 u + 4
= 6 u + 4
6 u + 4 = 46
6 u = 46 - 4
6 u = 42
1 u = 42 ÷ 6 = 7
Cost of 1 card
= 1 u
= $7
(b)
Cost of 1 eraser
= 1 u + 4
= 7 + 4
= $11
Answer(s): (a) $7; (b) $11