PSLEThere were a total of 184 tables and benches in a tuckshop. There were 3 times as many benches as tables. After 18 benches and some tables were removed, there were 5 times as many benches as tables left. How many tables were removed from the tuckshop?
|
Tables |
Benches |
Total |
Before |
1 u |
3 u |
184 |
Change |
- ? |
- 18 |
|
After |
1 p |
5 p |
|
Total number of tables and benches
= 3 u + 1 u
= 4 u
4 u = 184
1 u = 184 ÷ 4 = 46
Number of benches at first
= 3 u
= 3 x 46
= 138
Number of benches left
= 138 - 18
= 120
5 p = 120
1 p = 120 ÷ 5 = 24
Number of tables removed from the tuckshop
= 46 - 24
= 22
Answer(s): 22