Kylie, Barbara and Emma have 96 buttons. Kylie has
35 as many buttons as Barbara. Emma's buttons is
15 of the total number of Kylie's and Barbara's buttons. How many buttons must Barbara give to Emma so that both Kylie and Emma will have the same number of buttons?
| Kylie |
Barbara |
Emma |
Total |
5x8 =
40 u |
1x8 =
8 u |
|
3x5 =
15 u |
5x5 =
25 u |
|
|
| 15 u |
25 u |
8 u |
96 |
Total number of buttons
= 15 u + 25 u + 8 u
= 48 u
48 u = 96
1 u = 96 ÷ 48 = 2
| Kylie |
Barbara |
Emma |
Total |
| 15 u |
25 u |
8 u |
96 |
| |
- 7 u |
+ 7 u |
|
| 15 u |
18 u |
15 u |
96 |
Number of buttons that Barbara must give to Emma
= 15 u - 8 u
= 7 u
= 7 x 2
= 14
Answer(s): 14
