A toy car costs $30.
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 10 toy cars and 5 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 = $30
Cost of the doll = 1 u
(a)
Cost of the doll
= 30 ÷ 3
= $10
(b)
Cost of the toy car more than the doll
= 3 u - 1 u
= 2 u
= 2 x 10
= $20
(c)
Cost of 1 toy car and 1 doll
= 3 u + 1 u
= 4 u
= 4 x 10
= $40
(d)
Cost of 10 toy cars and 5 dolls
= 10 x 3 u + 5 x 1 u
= 30 u + 5 u
= 35 u
= 35 x 10
= $350
Answer(s): (a) $10; (b) $20; (c) $40; (d) $350
