Archie had
35 the number of pens that Seth had at first. After Seth gave Archie 12 of his pens, Archie had
34 the number of pens that Seth had. How many pens did Seth have in the end?
| |
Archie |
Seth |
Total |
| Before |
3x7 =
21 u |
5x7 =
35 u |
8x7 =
56 u |
| Change |
+ 3 u |
- 3 u |
|
| After |
3x8 =
24 u |
4x8 =
32 u |
7x8 =
56 u |
The total number of pens that Archie and Seth had at first and in the end remains unchanged. Make the total number of pens the same. LCM of 8 and 7 is 56.
Number of pens that Seth gave Archie
= 24 u - 21 u
= 3 u
3 u = 12
1 u = 12 ÷ 3 = 4
Number of pens that Seth had in the end
= 32 u
= 32 x 4
= 128
Answer(s): 128
