The ratio of Ken's to Cody's money is 3 : 4. The ratio of Cody's to Neave's money is 3 : 5. If Ken has $171, how much more does Neave have than Cody?
Ken |
Cody |
Neave |
3x3 |
4x3 |
|
|
3x4 |
5x4 |
9 u |
12 u |
20 u |
The amount that Cody has is the repeated identity.
Use LCM to make it the same.
LCM of 4 and 3 = 12
Amount that Ken has = 9 u
9 u = 171
1 u = 171 ÷ 9 = 19
Amount that Neave has more than Cody
= 20 u - 12 u
= 8 u
= 8 x 19
= $152
Answer(s): $152