PSLEThere were a total of 108 tables and chairs in a tuckshop. There were 2 times as many chairs as tables. After 22 chairs and some tables were thrown away, there were 5 times as many chairs as tables left. How many tables were thrown away from the tuckshop?
|
Tables |
Chairs |
Total |
Before |
1 u |
2 u |
108 |
Change |
- ? |
- 22 |
|
After |
1 p |
5 p |
|
Number of tables and chairs at first
= 2 u + 1 u
= 108
3 u = 108
1 u = 108 ÷ 3 = 36
Number of chairs at first
= 2 u
= 2 x 36
= 72
Number of chairs left
= 72 - 22
= 50
5 p = 50
1 p = 50 ÷ 5 = 10
Number of tables thrown away from the tuckshop
= 36 - 10
= 26
Answer(s): 26