The ratio of Vaidev's to John's money is 6 : 7. The ratio of John's to Albert's money is 3 : 4. If Vaidev has $342, how much more does Albert have than John?
| Vaidev |
John |
Albert |
| 6x3 |
7x3 |
|
| |
3x7 |
4x7 |
| 18 u |
21 u |
28 u |
The amount that John has is the repeated identity.
Use LCM to make it the same.
LCM of 7 and 3 = 21
Amount that Vaidev has = 18 u
18 u = 342
1 u = 342 ÷ 18 = 19
Amount that Albert has more than John
= 28 u - 21 u
= 7 u
= 7 x 19
= $133
Answer(s): $133
