PSLEThere were a total of 136 tables and benches in a tuckshop. There were 3 times as many benches as tables. After 14 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 |
3 u |
136 |
Change |
- ? |
- 14 |
|
After |
1 p |
4 p |
|
Total number of tables and benches
= 3 u + 1 u
= 4 u
4 u = 136
1 u = 136 ÷ 4 = 34
Number of benches at first
= 3 u
= 3 x 34
= 102
Number of benches left
= 102 - 14
= 88
4 p = 88
1 p = 88 ÷ 4 = 22
Number of tables removed from the tuckshop
= 34 - 22
= 12
Answer(s): 12