Luis, Rael and Nora share a sum of money. Luis's share is half of what Rael and Nora receive. Rael's share is
712 of the sum of money. Nora receives $21 less than Luis.
- What fraction of the sum of money is Luis's share?
- How much is the sum of money?
Luis |
Nora |
Rael |
Total |
1x4 |
2x4 |
3x4 |
5 |
7 |
12 |
4 u |
1 u |
7 u |
12 u |
(a)
The total amount that Luis, Rael and Nora had is repeated. Make the total amount the same. LCM of 3 and 12 is 12.
Luis's shareTotal amount =
412 =
13 (b)
Amount that Nora had less than Luis
= 4 u - 1 u
= 3 u
3 u = 21
1 u = 21 ÷ 3 = 7
Total amount that Luis, Rael and Nora had
= 12 u
= 12 x 7
= $84
Answer(s): (a)
13; (b) $84