Harry had
79 as many marbles as Yen. After Harry gave away 57 marbles, he had 97 less marbles than Yen. How many marbles did Yen have?
|
Harry |
Yen |
Before |
7 u |
9 u |
Change |
- 57 |
|
After |
7 u - 57 |
9 u |
Yen had 97 more marbles than Harry in the end. So, if Harry had another 97 marbles, he would have the same number of marbles as Yen.
9 u = 7 u - 57 + 97
9 u - 7 u = 97 - 57
2 u = 40
1 u = 40 ÷ 2 = 20
Number of marbles that Yen had at first
= 9 u
= 9 x 20
= 180
Answer: 180