The ratio of Brandon's to Harry's money is 4 : 9. The ratio of Harry's to Ivan's money is 3 : 5. If Brandon has $68, how much more does Ivan have than Harry?
Brandon |
Harry |
Ivan |
4x1 |
9x1 |
|
|
3x3 |
5x3 |
4 u |
9 u |
15 u |
The amount that Harry has is the repeated identity.
Use LCM to make it the same.
LCM of 9 and 3 = 9
Amount that Brandon has = 4 u
4 u = 68
1 u = 68 ÷ 4 = 17
Amount that Ivan has more than Harry
= 15 u - 9 u
= 6 u
= 6 x 17
= $102
Answer(s): $102