There were some rows of stools in a hall. Each row had 11 stools. When Wendy brought in 2 extra stools and rearranged all the stools, there were 6 stools in each row and 2 more rows than before. How many stools were there at first?
| |
First
arrangement |
Second
arrangement |
| Number |
1 u |
1 u + 2 |
| Value |
11 |
6 |
| Total value |
11 u |
6 u + 12 |
If another 2 stools are added in the first arrangement, the total number of stools in the first arrangement and the second arrangement will be the same.
11 u + 2 = 6 u + 12
11 u - 6 u = 12 - 2
5 u = 10
1 u = 10 ÷ 5 = 2
Number of stools at first
= 11 u
= 11 x 2
= 22
Answer(s): 22
