Jack had
25 as many marbles as Yen. After Jack gave away 55 marbles, he had 91 less marbles than Yen. How many marbles did Yen have?
| |
Jack |
Yen |
| Before |
2 u |
5 u |
| Change |
- 55 |
|
| After |
2 u - 55 |
5 u |
Yen had 91 more marbles than Jack in the end. So, if Jack had another 91 marbles, he would have the same number of marbles as Yen.
5 u = 2 u - 55 + 91
5 u - 2 u = 91 - 55
3 u = 36
1 u = 36 ÷ 3 = 12
Number of marbles that Yen had at first
= 5 u
= 5 x 12
= 60
Answer: 60
