A toy car costs $60.
It costs 3 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 7 toy cars and 3 dolls cost?
Choose the cheaper item to be 1 u.
The toy car costs 3 times as much as the doll.
The doll is cheaper.
Cost of the toy car = 3 u = $60
Cost of the doll = 1 u
(a)
Cost of the doll
= 60 ÷ 3
= $20
(b)
Cost of the toy car more than the doll
= 3 u - 1 u
= 2 u
= 2 x 20
= $40
(c)
Cost of 1 toy car and 1 doll
= 3 u + 1 u
= 4 u
= 4 x 20
= $80
(d)
Cost of 7 toy cars and 3 dolls
= 7 x 3 u + 3 x 1 u
= 21 u + 3 u
= 24 u
= 24 x 20
= $480
Answer(s): (a) $20; (b) $40; (c) $80; (d) $480