In a stationery kiosk, the number of pencils was
911 of the total number of pencils and staplers together. Peter sold the pencils and staplers in sets of 2 pencils and 7 staplers. After selling all the staplers, he still had 354 pencils left. How many staplers were in the stationery kiosk were sold?
| |
Pencils |
Staplers |
| Before |
9x7 =
63 u |
2x7 =
14 u |
| Change |
- 2x2 =
- 4 u |
- 7x2 =
- 14 u |
| After |
354 |
0 |
Since all the staplers were sold, the number of staplers at first and the number of staplers sold were the same. Make the number of staplers at first and sold the same. LCM of 2 and 7 is 14.
Number of pencils sold
= 63 u - 4 u
= 59 u
59 u = 354
1 u = 354 ÷ 59 = 6
Number of staplers were sold
= 14 u
= 14 x 6
= 84
Answer(s): 84
