Shiyun and Eva collected beads. Shiyun gave 30% of her beads to Eva and as a result, Eva's beads increased by 25%. If Shiyun had 63 beads left, find the number of beads Eva should give to Shiyun in the end so that both had an equal number of beads.
| |
Shiyun
|
Eva |
Comparing the change
in Eva's beads
|
|
Before
|
10x1 =
10 u |
|
4x3 =
12u |
|
Change
|
- 3x1 =
- 3 u
|
+ 3x1 =
+ 3 u
|
+ 1x3 =
+ 3 u
|
|
After
|
7x1 =
7 u
|
|
5x3 =
15 u |
30% =
30100 =
31025% =
25100 =
14The increase in the number of beads that Eva had is repeated. Make the increase in the number of beads that Eva had the same. LCM of 3 and 1 = 3
7 u = 63
1 u = 63 ÷ 7 = 9
Number of beads that Eva had more than Shiyun in the end
= 15 u - 7 u
= 8 u
Number of beads that Eva should give to Shiyun so that both had an equal number of beads in the end
= 8 u ÷ 2
= 4 u
= 4 x 9
= 36
Answer(s): 36
