PSLEThere were a total of 111 tables and chairs in a parade square. There were 2 times as many chairs as tables. After 26 chairs and some tables were thrown away, there were 4 times as many chairs as tables left. How many tables were thrown away from the parade square?
|
Tables |
Chairs |
Total |
Before |
1 u |
2 u |
111 |
Change |
- ? |
- 26 |
|
After |
1 p |
4 p |
|
Number of tables and chairs at first
= 2 u + 1 u
= 111
3 u = 111
1 u = 111 ÷ 3 = 37
Number of chairs at first
= 2 u
= 2 x 37
= 74
Number of chairs left
= 74 - 26
= 48
4 p = 48
1 p = 48 ÷ 4 = 12
Number of tables thrown away from the parade square
= 37 - 12
= 25
Answer(s): 25