The ratio of Harry's to Oscar's money is 4 : 3. The ratio of Oscar's to Perry's money is 3 : 5. If Harry has $68, how much more does Perry have than Oscar?
| Harry |
Oscar |
Perry |
| 4x1 |
3x1 |
|
| |
3x1 |
5x1 |
| 4 u |
3 u |
5 u |
The amount that Oscar has is the repeated identity.
Use LCM to make it the same.
LCM of 3 and 3 = 3
Amount that Harry has = 4 u
4 u = 68
1 u = 68 ÷ 4 = 17
Amount that Perry has more than Oscar
= 5 u - 3 u
= 2 u
= 2 x 17
= $34
Answer(s): $34
