Kimberly baked a total of 484 cupcakes and cookies. After giving away 80% of the cookies and 75% of the cupcakes, she was left with five times as many cookies as cupcakes. Find the number of cupcakes Kimberly gave away.
| |
Cookies |
Cupcakes |
| Before |
5x5 =
25 u
|
4 u |
| Change |
- 4x5 =
20 u |
- 3 u |
| After |
1x5 =
5 u |
1 u |
Comparing cookies and
cupcakes in the end |
5x1 =
5 u |
1x1 =
1 u |
80% =
80100 =
4575% =
75100 =
34The number of cookies in the end is the repeated identity. Make the number of cookies in the end the same. LCM of 1 and 5 is 5.
Total number of pastries at first
= 25 u + 4 u
= 29 u
29 u = 484
1 u = 484 ÷ 29 = 4
Number of cupcakes that Kimberly gave away
= 3 u
= 3 x 4
= 12
Answer(s): 12
