Yesterday, Glen had 33 more marbles than Bryan. Today, Glen gave Bryan
49 of his marbles. As a result, he has half as many marbles as Bryan now. How many marbles did Glen have yesterday?
|
Glen |
Bryan |
More |
Before |
9 u |
6 u |
3 u |
Change |
- 4 u |
+ 4 u |
|
After |
5 u |
10 u |
|
Comparing Glen and Bryan in the end |
1
|
2
|
|
Number of marbles that Bryan has now
= 2 x 5 u
= 10 u
Number of marbles that Glen had more than Bryan yesterday
= 9 u - 6 u
= 3 u
3 u = 33
1 u = 33 ÷ 3 = 11
Number of marbles that Glen had yesterday
= 9 u
= 9 x 11
= 99
Answer(s): 99