Eva and Shiyun collected beads. Eva gave 30% of her beads to Shiyun and as a result, Shiyun's beads increased by 25%. If Eva had 28 beads left, find the number of beads Shiyun should give to Eva in the end so that both had an equal number of beads.
| |
Eva
|
Shiyun |
Comparing the change
in Shiyun'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 Shiyun had is repeated. Make the increase in the number of beads that Shiyun had the same. LCM of 3 and 1 = 3
7 u = 28
1 u = 28 ÷ 7 = 4
Number of beads that Shiyun had more than Eva in the end
= 15 u - 7 u
= 8 u
Number of beads that Shiyun should give to Eva so that both had an equal number of beads in the end
= 8 u ÷ 2
= 4 u
= 4 x 4
= 16
Answer(s): 16
