The ratio of Gabriel's to Charlie's money is 7 : 6. The ratio of Charlie's to Albert's money is 3 : 5. If Gabriel has $98, how much less does Charlie have than Albert?
Gabriel |
Charlie |
Albert |
7x1 |
6x1 |
|
|
3x2 |
5x2 |
7 u |
6 u |
10 u |
The amount that Charlie has is the repeated identity.
Use LCM to make it the same.
LCM of 6 and 3 = 6
Amount that Gabriel has = 7 u
7 u = 98
1 u = 98 ÷ 7 = 14
Amount that Charlie has less than Albert
= 10 u - 6 u
= 4 u
= 4 x 14
= $56
Answer(s): $56