The ratio of Michael's to Daniel's money is 8 : 9. The ratio of Daniel's to John's money is 3 : 4. If Michael has $144, how much less does Daniel have than John?
| Michael |
Daniel |
John |
| 8x1 |
9x1 |
|
| |
3x3 |
4x3 |
| 8 u |
9 u |
12 u |
The amount that Daniel has is the repeated identity.
Use LCM to make it the same.
LCM of 9 and 3 = 9
Amount that Michael has = 8 u
8 u = 144
1 u = 144 ÷ 8 = 18
Amount that Daniel has less than John
= 12 u - 9 u
= 3 u
= 3 x 18
= $54
Answer(s): $54
