A toy car costs $100.
It costs 10 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 4 toy cars and 7 dolls cost?
Choose the cheaper item to be 1 u.
The toy car costs 10 times as much as the doll.
The doll is cheaper.
Cost of the toy car = 10 u = $100
Cost of the doll = 1 u
(a)
Cost of the doll
= 100 ÷ 10
= $10
(b)
Cost of the toy car more than the doll
= 10 u - 1 u
= 9 u
= 9 x 10
= $90
(c)
Cost of 1 toy car and 1 doll
= 10 u + 1 u
= 11 u
= 11 x 10
= $110
(d)
Cost of 4 toy cars and 7 dolls
= 4 x 10 u + 7 x 1 u
= 40 u + 7 u
= 47 u
= 47 x 10
= $470
Answer(s): (a) $10; (b) $90; (c) $110; (d) $470