The ratio of Simon's to Daniel's money is 6 : 7. The ratio of Daniel's to Ian's money is 3 : 5. If Simon has $288, how much more does Ian have than Daniel?
Simon |
Daniel |
Ian |
6x3 |
7x3 |
|
|
3x7 |
5x7 |
18 u |
21 u |
35 u |
The amount that Daniel has is the repeated identity.
Use LCM to make it the same.
LCM of 7 and 3 = 21
Amount that Simon has = 18 u
18 u = 288
1 u = 288 ÷ 18 = 16
Amount that Ian has more than Daniel
= 35 u - 21 u
= 14 u
= 14 x 16
= $224
Answer(s): $224