Jen baked a total of 324 tarts and puffs. After giving away 90% of the puffs and 75% of the tarts, she was left with four times as many puffs as tarts. Find the number of tarts Jen gave away.
| |
Puffs |
Tarts |
| Before |
10x4 =
40 u
|
4 u |
| Change |
- 9x4 =
36 u |
- 3 u |
| After |
1x4 =
4 u |
1 u |
Comparing puffs and
tarts in the end |
4x1 =
4 u |
1x1 =
1 u |
90% =
90100 =
91075% =
75100 =
34The number of puffs in the end is the repeated identity. Make the number of puffs in the end the same. LCM of 1 and 4 is 4.
Total number of pastries at first
= 40 u + 4 u
= 44 u
44 u = 324
1 u = 324 ÷ 44 = 12
Number of tarts that Jen gave away
= 3 u
= 3 x 12
= 36
Answer(s): 36
