Risa baked 200 puffs.
35 of the puffs were mocha puffs. The rest were matcha puffs. She gave an equal number of mocha puffs and matcha puffs away and had 5 times as many mocha puffs as matcha puffs left. How many puffs did she give away?
| |
Mocha puffs |
Matcha puffs |
Difference |
| Before |
3x4 =
12 u |
2x4 =
8 u |
1x4 =
4 u |
| Change |
- 7 u |
- 7 u |
|
| After |
5x1 =
5 u |
1x1 =
1 u |
4x1 =
4 u |
Since Risa gave away an equal number of mocha puffs and matcha puffs, the difference in the number of mocha puffs and matcha puffs remains unchanged. Make the difference in the mocha puffs and matcha puffs the same. LCM of 1 and 4 is 4.
Total number of puffs at first
= 12 u + 8 u
= 20 u
20 u = 200
1 u = 200 ÷ 20 = 10
Number of puffs that Risa gave away
= 7 u + 7 u
= 14 u
= 14 x 10
= 140
Answer(s): 140
