The ratio of Jack's to Jeremy's money is 8 : 7. The ratio of Jeremy's to Harry's money is 3 : 5. If Jack has $240, how much more does Harry have than Jeremy?
Jack |
Jeremy |
Harry |
8x3 |
7x3 |
|
|
3x7 |
5x7 |
24 u |
21 u |
35 u |
The amount that Jeremy has is the repeated identity.
Use LCM to make it the same.
LCM of 7 and 3 = 21
Amount that Jack has = 24 u
24 u = 240
1 u = 240 ÷ 24 = 10
Amount that Harry has more than Jeremy
= 35 u - 21 u
= 14 u
= 14 x 10
= $140
Answer(s): $140