The ratio of Liam's to Ian's money is 3 : 7. The ratio of Ian's to Asher's money is 3 : 5. If Liam has $171, how much more does Asher have than Ian?
Liam |
Ian |
Asher |
3x3 |
7x3 |
|
|
3x7 |
5x7 |
9 u |
21 u |
35 u |
The amount that Ian has is the repeated identity.
Use LCM to make it the same.
LCM of 7 and 3 = 21
Amount that Liam has = 9 u
9 u = 171
1 u = 171 ÷ 9 = 19
Amount that Asher has more than Ian
= 35 u - 21 u
= 14 u
= 14 x 19
= $266
Answer(s): $266