PSLEThere were a total of 180 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 |
180 |
Change |
- ? |
- 16 |
|
After |
1 p |
4 p |
|
Total number of tables and benches
= 2 u + 1 u
= 3 u
3 u = 180
1 u = 180 ÷ 3 = 60
Number of benches at first
= 2 u
= 2 x 60
= 120
Number of benches left
= 120 - 16
= 104
4 p = 104
1 p = 104 ÷ 4 = 26
Number of tables removed from the tuckshop
= 60 - 26
= 34
Answer(s): 34