PSLEThere were a total of 112 tables and benches in a basketball court. There were 3 times as many benches as tables. After 19 benches and some tables were removed, there were 5 times as many benches as tables left. How many tables were removed from the basketball court?
|
Tables |
Benches |
Total |
Before |
1 u |
3 u |
112 |
Change |
- ? |
- 19 |
|
After |
1 p |
5 p |
|
Total number of tables and benches
= 3 u + 1 u
= 4 u
4 u = 112
1 u = 112 ÷ 4 = 28
Number of benches at first
= 3 u
= 3 x 28
= 84
Number of benches left
= 84 - 19
= 65
5 p = 65
1 p = 65 ÷ 5 = 13
Number of tables removed from the basketball court
= 28 - 13
= 15
Answer(s): 15