The ratio of Brandon's to Howard's money is 3 : 5. The ratio of Howard's to Pierre's money is 3 : 5. If Brandon has $90, how much more does Pierre have than Howard?
| Brandon |
Howard |
Pierre |
| 3x3 |
5x3 |
|
| |
3x5 |
5x5 |
| 9 u |
15 u |
25 u |
The amount that Howard has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 3 = 15
Amount that Brandon has = 9 u
9 u = 90
1 u = 90 ÷ 9 = 10
Amount that Pierre has more than Howard
= 25 u - 15 u
= 10 u
= 10 x 10
= $100
Answer(s): $100
