Julie baked 30 puffs.
35 of the puffs were cherry puffs. The rest were strawberry puffs. She gave an equal number of cherry puffs and strawberry puffs away and had 3 times as many cherry puffs as strawberry puffs left. How many puffs did she give away?
| |
Cherry puffs |
Strawberry puffs |
Difference |
| Before |
3x2 =
6 u |
2x2 =
4 u |
1x2 =
2 u |
| Change |
- 3 u |
- 3 u |
|
| After |
3x1 =
3 u |
1x1 =
1 u |
2x1 =
2 u |
Since Julie gave away an equal number of cherry puffs and strawberry puffs, the difference in the number of cherry puffs and strawberry puffs remains unchanged. Make the difference in the cherry puffs and strawberry puffs the same. LCM of 1 and 2 is 2.
Total number of puffs at first
= 6 u + 4 u
= 10 u
10 u = 30
1 u = 30 ÷ 10 = 3
Number of puffs that Julie gave away
= 3 u + 3 u
= 6 u
= 6 x 3
= 18
Answer(s): 18
