PSLEThere were a total of 108 tables and benches in a tuckshop. There were 2 times as many benches as tables. After 16 benches and some tables were removed, there were 4 times as many benches as tables left. How many tables were removed from the tuckshop?
|
Tables |
Benches |
Total |
Before |
1 u |
2 u |
108 |
Change |
- ? |
- 16 |
|
After |
1 p |
4 p |
|
Total number of tables and benches
= 2 u + 1 u
= 3 u
3 u = 108
1 u = 108 ÷ 3 = 36
Number of benches at first
= 2 u
= 2 x 36
= 72
Number of benches left
= 72 - 16
= 56
4 p = 56
1 p = 56 ÷ 4 = 14
Number of tables removed from the tuckshop
= 36 - 14
= 22
Answer(s): 22