A toy car costs $120.
It costs 4 times as much as a doll.
- How much is the doll?
- How much is the toy car more than the doll?
- How much will 1 toy car and 1 doll cost?
- How much will 3 toy cars and 2 dolls cost?
Choose the cheaper item to be 1 u.
The toy car costs 4 times as much as the doll.
The doll is cheaper.
Cost of the toy car = 4 u = $120
Cost of the doll = 1 u
(a)
Cost of the doll
= 120 ÷ 4
= $30
(b)
Cost of the toy car more than the doll
= 4 u - 1 u
= 3 u
= 3 x 30
= $90
(c)
Cost of 1 toy car and 1 doll
= 4 u + 1 u
= 5 u
= 5 x 30
= $150
(d)
Cost of 3 toy cars and 2 dolls
= 3 x 4 u + 2 x 1 u
= 12 u + 2 u
= 14 u
= 14 x 30
= $420
Answer(s): (a) $30; (b) $90; (c) $150; (d) $420