Victoria, Pamela and Gwen have 486 erasers. Victoria has
45 as many erasers as Pamela. Gwen's erasers is
15 of the total number of Victoria's and Pamela's erasers. How many erasers must Pamela give to Gwen so that both Victoria and Gwen will have the same number of erasers?
Victoria |
Pamela |
Gwen |
Total |
5x9 = 45 u |
1x9 = 9 u |
|
4x5 = 20 u |
5x5 = 25 u |
|
|
20 u |
25 u |
9 u |
486 |
Total number of erasers
= 20 u + 25 u + 9 u
= 54 u
54 u = 486
1 u = 486 ÷ 54 = 9
Victoria |
Pamela |
Gwen |
Total |
20 u |
25 u |
9 u |
486 |
|
- 11 u |
+ 11 u |
|
20 u |
14 u |
20 u |
486 |
Number of erasers that Pamela must give to Gwen
= 20 u - 9 u
= 11 u
= 11 x 9
= 99
Answer(s): 99