Yesterday, Harry had 36 more marbles than Will. Today, Harry gave Will
49 of his marbles. As a result, he has half as many marbles as Will now. How many marbles did Harry have yesterday?
|
Harry |
Will |
More |
Before |
9 u |
6 u |
3 u |
Change |
- 4 u |
+ 4 u |
|
After |
5 u |
10 u |
|
Comparing Harry and Will in the end |
1
|
2
|
|
Number of marbles that Will has now
= 2 x 5 u
= 10 u
Number of marbles that Harry had more than Will yesterday
= 9 u - 6 u
= 3 u
3 u = 36
1 u = 36 ÷ 3 = 12
Number of marbles that Harry had yesterday
= 9 u
= 9 x 12
= 108
Answer(s): 108