Andy had
35 as many cards as Jane. After Andy gave away 51 cards, he had 69 less cards than Jane. How many cards did Jane have?
| |
Andy |
Jane |
| Before |
3 u |
5 u |
| Change |
- 51 |
|
| After |
3 u - 51 |
5 u |
Jane had 69 more cards than Andy in the end. So, if Andy had another 69 cards, he would have the same number of cards as Jane.
5 u = 3 u - 51 + 69
5 u - 3 u = 69 - 51
2 u = 18
1 u = 18 ÷ 2 = 9
Number of cards that Jane had at first
= 5 u
= 5 x 9
= 45
Answer: 45
