Jade and Shannon collected buttons. Shannon gave 60% of her buttons to Jade. As a result, Jade's buttons increased by 25%. If Jade had 75 buttons left, find the total number of buttons the two girls had at first.
| |
Comparing the change
in Shannon's buttons |
Shannon |
Jade |
| Before |
5x1 =
5 u |
|
4x3 =
12 u |
| Change |
- 3x1 =
- 3 u |
- 1x3 =
- 3 u |
+ 1x3 =
+ 3 u |
| After |
2x1 =
2 u |
|
5x3 =
15 u |
60% =
60100 =
35 25% =
25100 =
14 The number of buttons that Jade gave to Shannon is repeated. Make the number of buttons that Jade gave to Shannon the same. LCM of 1 and 3 is 3.
Number of buttons that Jade had in the end = 15 u
15 u = 75
1 u = 75 ÷ 15 = 5
Number of buttons that Shannon and Jade had at first
= 5 u + 12 u
= 17 u
= 17 x 5
= 85
Answer(s): 85
