PSLEThere were a total of 186 tables and benches in a tuckshop. There were 2 times as many benches as tables. After 12 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 |
186 |
Change |
- ? |
- 12 |
|
After |
1 p |
4 p |
|
Total number of tables and benches
= 2 u + 1 u
= 3 u
3 u = 186
1 u = 186 ÷ 3 = 62
Number of benches at first
= 2 u
= 2 x 62
= 124
Number of benches left
= 124 - 12
= 112
4 p = 112
1 p = 112 ÷ 4 = 28
Number of tables removed from the tuckshop
= 62 - 28
= 34
Answer(s): 34