Carl had 135 pens more than Valen at first. After Carl had given away 151 of his pens to Will, Valen had thrice as many pens as Carl. Find the number of pens Carl had at first.
|
Carl |
Valen |
Comparing between Carl and Valen |
135 more |
|
Before |
1 u + 151 |
3 u |
Change |
- 151 |
|
After |
1 u |
3 u |
Carl had 135 pens more than Valen at first.
If 135 more marbles is given to Valen at first, both will have the same number of marbles.
3 u + 135 = 1 u + 151
3 u - 1 u = 151 - 135
2 u = 16
1 u = 16 ÷ 2 = 8
Number of pens that Carl has at first
= 1 u + 151
= 8 + 151
= 159
Answer(s): 159