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