There were some rows of tables in a tuckshop. Each row had 10 tables. When Sarah brought in 4 extra tables and rearranged all the tables, there were 6 tables in each row and 4 more rows than before. How many tables were there at first?
|
First arrangement |
Second arrangement |
Number |
1 u |
1 u + 4 |
Value |
10 |
6 |
Total value |
10 u |
6 u + 24 |
If another 4 tables are added in the first arrangement, the total number of tables in the first arrangement and the second arrangement will be the same.
10 u + 4 = 6 u + 24
10 u - 6 u = 24 - 4
4 u = 20
1 u = 20 ÷ 4 = 5
Number of tables at first
= 10 u
= 10 x 5
= 50
Answer(s): 50