There were some rows of tables in a canteen. Each row had 8 tables. When Marion brought in 10 extra tables and rearranged all the tables, there were 6 tables in each row and 3 more rows than before. How many tables were there at first?
|
First arrangement |
Second arrangement |
Number |
1 u |
1 u + 3 |
Value |
8 |
6 |
Total value |
8 u |
6 u + 18 |
If another 10 tables are added in the first arrangement, the total number of tables in the first arrangement and the second arrangement will be the same.
8 u + 10 = 6 u + 18
8 u - 6 u = 18 - 10
2 u = 8
1 u = 8 ÷ 2 = 4
Number of tables at first
= 8 u
= 8 x 4
= 32
Answer(s): 32