Opal, Fiona and Raeann have 140 stamps. Opal has
34 as many stamps as Fiona. Raeann's stamps is
13 of the total number of Opal's and Fiona's stamps. How many stamps must Fiona give to Raeann so that both Opal and Raeann will have the same number of stamps?
| Opal |
Fiona |
Raeann |
Total |
3x7 =
21 u |
1x7 =
7 u |
|
3x3 =
9 u |
4x3 =
12 u |
|
|
| 9 u |
12 u |
7 u |
140 |
Total number of stamps
= 9 u + 12 u + 7 u
= 28 u
28 u = 140
1 u = 140 ÷ 28 = 5
| Opal |
Fiona |
Raeann |
Total |
| 9 u |
12 u |
7 u |
140 |
| |
- 2 u |
+ 2 u |
|
| 9 u |
10 u |
9 u |
140 |
Number of stamps that Fiona must give to Raeann
= 9 u - 7 u
= 2 u
= 2 x 5
= 10
Answer(s): 10
