Irene, Olivia and Tammy have 525 pens altogether. After Olivia gave Tammy 53 pens and Tammy gave Irene 18 pens, they all have equal number of pens.
- How many pens did each girl have in the end?
- How many pens did Tammy have at first?
|
Irene |
Olivia |
Tammy |
Total |
Before |
|
|
? |
525 |
Change 1 |
|
- 53 |
+ 53 |
|
Change 2 |
+ 18 |
|
- 18 |
|
After |
175 |
175 |
175 |
525 |
(a)
Number of pens that each of them had in the end
= 525 ÷ 3
= 175
(b)
Number of pens that Tammy had at first
= 175 + 18 - 53
= 140
Answer(s): (a) 175; (b) 140