John had
25 as many stickers as Zara. After John gave away 75 stickers, he had 90 less stickers than Zara. How many stickers did Zara have?
| |
John |
Zara |
| Before |
2 u |
5 u |
| Change |
- 75 |
|
| After |
2 u - 75 |
5 u |
Zara had 90 more stickers than John in the end. So, if John had another 90 stickers, he would have the same number of stickers as Zara.
5 u = 2 u - 75 + 90
5 u - 2 u = 90 - 75
3 u = 15
1 u = 15 ÷ 3 = 5
Number of stickers that Zara had at first
= 5 u
= 5 x 5
= 25
Answer: 25
