The number of blueberry cakes on display at a cafe was
45 of the number of puffs on display. After 25 blueberry cakes were bought and the staff added another 43 puffs, the number of puffs was four times the number of blueberry cakes. The last group of customers bought 6 puffs each, finishing all the puffs on display. How many customers were there in the last group?
|
Blueberry cakes |
Puffs |
Before |
4 u |
5 u |
Change |
- 25 |
+ 43 |
After |
4 u - 25 |
5 u + 43 |
Comparing blueberry cakes and puffs in the end |
1 |
4 |
The number of puffs was four times the number of blueberry cakes in the end.
Number of puffs in the end
= 4(4 u - 25)
= 16 u - 100
16 u - 100 = 5 u + 43 16 u - 5 u = 100 + 4311 u = 143
1 u = 143 ÷ 11 = 13Number of puffs in the end= 5 u + 43= 5 x 13 + 43= 108Number of customers in the last group= 108 ÷ 6= 18 Answer(s): 18