Ivory and Fiona collected beads. Ivory gave 30% of her beads to Fiona and as a result, Fiona's beads increased by 25%. If Ivory had 42 beads left, find the number of beads Fiona should give to Ivory in the end so that both had an equal number of beads.
| |
Ivory
|
Fiona |
Comparing the change
in Fiona'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 Fiona had is repeated. Make the increase in the number of beads that Fiona had the same. LCM of 3 and 1 = 3
7 u = 42
1 u = 42 ÷ 7 = 6
Number of beads that Fiona had more than Ivory in the end
= 15 u - 7 u
= 8 u
Number of beads that Fiona should give to Ivory so that both had an equal number of beads in the end
= 8 u ÷ 2
= 4 u
= 4 x 6
= 24
Answer(s): 24
