In a store, the number of staplers was
23 of the total number of staplers and markers together. Xavier sold the staplers and markers in sets of 2 staplers and 5 markers. After selling all the markers, he still had 80 staplers left. How many staplers were in the store at first?
| |
Staplers |
Markers |
| Before |
2x5 =
10 u |
1x5 =
5 u |
| Change |
- 2x1 =
- 2 u |
- 5x1 =
- 5 u |
| After |
80 |
0 |
Since all the markers were sold, the number of markers at first and the number of markers sold were the same. Make the number of markers at first and sold the same. LCM of 1 and 5 is 5.
Number of staplers sold
= 10 u - 2 u
= 8 u
8 u = 80
1 u = 80 ÷ 8 = 10
Number of staplers at first
= 10 u
= 10 x 10
= 100
Answer(s): 100
