Jane spent
25 of her money on 3 puffs and 10 shortbreads. If each puff costs twice as much as a shortbread, how many puffs could Jane buy with the rest of her money?
| |
Puffs |
Shortbreads |
| Number |
3 |
10 |
| Value |
2 u |
1 u |
| Total value |
6 u |
10 u |
Cost of 1 shortbread = 1 u
Cost of 1 puff = 2 u
Total cost of 3 puffs and 10 shortbreads
= 3 x 2 u + 10 x 1 u
= 16 u
Fraction of Jane's money left
= 1 -
25 =
3525 of Jane's money = 16 u
15 of Jane's money = 16 u ÷ 2 = 8 u
35 of Jane's money = 8 u x 3 = 24 u
Number of puffs that Jane could buy
= 24 u ÷ 2 u
= 12
Answer(s): 12
