Flynn had
35 the number of erasers that Albert had at first. After Albert gave Flynn 18 of his erasers, Flynn had
34 the number of erasers that Albert had. How many erasers did Flynn have at first?
|
Flynn |
Albert |
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 erasers that Flynn and Albert had at first and in the end remains unchanged. Make the total number of erasers the same. LCM of 8 and 7 is 56.
Number of erasers that Albert gave Flynn
= 24 u - 21 u
= 3 u
3 u = 18
1 u = 18 ÷ 3 = 6
Number of erasers that Flynn had at first
= 21 u
= 21 x 6
= 126
Answer(s): 126