Natalie bought some custard and chocolate puffs in the ratio of 5 : 4. After Natalie's classmates ate an equal number of the two types of puffs, there were 40% fewer chocolate than custard puffs. In the end, there were 136 puffs left. How many puffs of each type were eaten?
| |
Custard |
Chocolate |
Difference |
| Before |
5x2 =
10 u |
4x2 =
8 u |
1x2 =
2 u |
| Change |
- 5 u |
- 5 u |
|
| After |
5 u |
3 u |
2 u |
100% - 40% = 60%
60% =
60100 =
35The difference in the number of custard and chocolate puffs remains unchanged.
LCM of 1 and 2 = 2
Total puffs left = 5 u + 3 u = 8 u
8 u = 136
1 u = 136 ÷ 8 = 17
Total number of each type of puffs eaten
= 5 u
= 5 x 17
= 85
Answer(s): 85
