A toy car costs $20.
It costs 2 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 10 dolls cost?
Choose the cheaper item to be 1 u.
The toy car costs 2 times as much as the doll.
The doll is cheaper.
Cost of the toy car = 2 u = $20
Cost of the doll = 1 u
(a)
Cost of the doll
= 20 ÷ 2
= $10
(b)
Cost of the toy car more than the doll
= 2 u - 1 u
= 1 u
= 1 x 10
= $10
(c)
Cost of 1 toy car and 1 doll
= 2 u + 1 u
= 3 u
= 3 x 10
= $30
(d)
Cost of 10 toy cars and 10 dolls
= 10 x 2 u + 10 x 1 u
= 20 u + 10 u
= 30 u
= 30 x 10
= $300
Answer(s): (a) $10; (b) $10; (c) $30; (d) $300