Zeph had
58 the number of erasers that Zane had at first. After Zane gave Zeph 16 of his erasers, Zeph had
34 the number of erasers that Zane had. How many erasers did Zane have in the end?
|
Zeph |
Zane |
Total |
Before |
5x7 = 35 u |
8x7 = 56 u |
13x7 = 91 u |
Change |
+ 4 u |
- 4 u |
|
After |
3x13 = 39 u |
4x13 = 52 u |
7x13 = 91 u |
The total number of erasers that Zeph and Zane had at first and in the end remains unchanged. Make the total number of erasers the same. LCM of 13 and 7 is 91.
Number of erasers that Zane gave Zeph
= 39 u - 35 u
= 4 u
4 u = 16
1 u = 16 ÷ 4 = 4
Number of erasers that Zane had in the end
= 52 u
= 52 x 4
= 208
Answer(s): 208