Wendy had 69 more stickers than Irene. After Irene gave away
15 of her stickers, Wendy had twice as many stickers as Irene. How many stickers did Irene have at first?
| |
Wendy |
Irene |
Comparing Wendy
and Irene at first |
69 more |
|
| Before |
8 u |
5 u |
| Change |
|
- 1 u |
| After |
|
4 u |
Comparing Wendy
and Irene in the end |
2x4 =
8 u |
1x4 =
4 u |
The number of stickers that Wendy had at first and in the end remains unchanged. Make the number of stickers that Wendy had the same. LCM of 8 and 2 is 8.
Number of stickers that Wendy had more than Irene at first
= 8 u - 5 u
= 3 u
3 u = 69
1 u = 69 ÷ 3 = 23
Number of stickers that Irene had at first
= 5 u
= 5 x 23
= 115
Answer(s): 115
