Riordan, Eric and Cole shared a sum of money. Riordan and Eric received 90% of the total amount of money. Eric and Cole received 40% of the total amount of money. Given that Eric received $39 less than Riordan, how much was the sum of money that was shared by Eric and Cole?
| Riordan |
Eric |
Cole |
Total |
| 9x1 |
1x1 |
10x1 |
| 3x2 |
2x2 |
5x2 |
| 6 u |
3 u |
1 u |
10 u |
90% =
90100 =
910 40% =
40100 =
25 The total amount of money that Riordan, Eric and Cole shared is repeated. Make the total amount of money the same. LCM of 10 and 5 is 10.
Amount that Eric received less than Riordan
= 6 u - 3 u
= 3 u
3 u = 39
1 u = 39 ÷ 3 = 13
Amount that Eric and Cole shared
= 3 u + 1 u
= 4 u
= 4 x 13
= $52
Answer(s): $52
