The ratio of Pierre's to Owen's money is 7 : 10. The ratio of Owen's to Xavier's money is 4 : 5. If Pierre has $196, how much more does Xavier have than Owen?
| Pierre |
Owen |
Xavier |
| 7x2 |
10x2 |
|
| |
4x5 |
5x5 |
| 14 u |
20 u |
25 u |
The amount that Owen has is the repeated identity.
Use LCM to make it the same.
LCM of 10 and 4 = 20
Amount that Pierre has = 14 u
14 u = 196
1 u = 196 ÷ 14 = 14
Amount that Xavier has more than Owen
= 25 u - 20 u
= 5 u
= 5 x 14
= $70
Answer(s): $70
