Henry had 123 pens more than Billy at first. After Henry had given away 139 of his pens to Glen, Billy had five times as many pens as Henry. Find the number of pens Henry had at first.
| |
Henry |
Billy |
Comparing between
Henry and Billy |
123 more |
|
| Before |
1 u + 139 |
5 u |
| Change |
- 139 |
|
| After |
1 u |
5 u |
Henry had 123 pens more than Billy at first.
If 123 more marbles is given to Billy at first, both will have the same number of marbles.
5 u + 123 = 1 u + 139
5 u - 1 u = 139 - 123
4 u = 16
1 u = 16 ÷ 4 = 4
Number of pens that Henry has at first
= 1 u + 139
= 4 + 139
= 143
Answer(s): 143
