There were some rows of stools in a canteen. Each row had 8 stools. When Hilda brought in 4 extra stools and rearranged all the stools, there were 6 stools in each row and 4 more rows than before. How many stools were there at first?
| |
First
arrangement |
Second
arrangement |
| Number |
1 u |
1 u + 4 |
| Value |
8 |
6 |
| Total value |
8 u |
6 u + 24 |
If another 4 stools are added in the first arrangement, the total number of stools in the first arrangement and the second arrangement will be the same.
8 u + 4 = 6 u + 24
8 u - 6 u = 24 - 4
2 u = 20
1 u = 20 ÷ 2 = 10
Number of stools at first
= 8 u
= 8 x 10
= 80
Answer(s): 80
