Emily, Usha and Diana have 792 erasers. Emily has
56 as many erasers as Usha. Diana's erasers is
15 of the total number of Emily's and Usha's erasers. How many erasers must Usha give to Diana so that both Emily and Diana will have the same number of erasers?
Emily |
Usha |
Diana |
Total |
5x11 = 55 u |
1x11 = 11 u |
|
5x5 = 25 u |
6x5 = 30 u |
|
|
25 u |
30 u |
11 u |
792 |
Total number of erasers
= 25 u + 30 u + 11 u
= 66 u
66 u = 792
1 u = 792 ÷ 66 = 12
Emily |
Usha |
Diana |
Total |
25 u |
30 u |
11 u |
792 |
|
- 14 u |
+ 14 u |
|
25 u |
16 u |
25 u |
792 |
Number of erasers that Usha must give to Diana
= 25 u - 11 u
= 14 u
= 14 x 12
= 168
Answer(s): 168