Liam has
25 as many pens as Sam. They have a total of 252 pens. How many pens must Sam give to Liam so that they will have the same number of pens?
|
Liam |
Sam |
Total |
Before |
2 u |
5 u |
7 u |
Change |
+ ? |
- ? |
|
After |
126 |
126 |
252 |
Total number of pens
= 2 u + 5 u
= 7 u
7 u = 252
1 u = 252 ÷ 7 = 36
Number of pens that each of them has in the end
= 252 ÷ 2
= 126
Number of pens that Liam has
= 2 u
= 2 x 36
= 72
Number of pens that Sam must give Liam
= 126 - 72
= 54
Answer(s): 54