The ratio of Paul's to Harry's money is 6 : 7. The ratio of Harry's to Ryan's money is 4 : 5. If Paul has $288, how much more does Ryan have than Harry?
Paul |
Harry |
Ryan |
6x4 |
7x4 |
|
|
4x7 |
5x7 |
24 u |
28 u |
35 u |
The amount that Harry has is the repeated identity.
Use LCM to make it the same.
LCM of 7 and 4 = 28
Amount that Paul has = 24 u
24 u = 288
1 u = 288 ÷ 24 = 12
Amount that Ryan has more than Harry
= 35 u - 28 u
= 7 u
= 7 x 12
= $84
Answer(s): $84