PSLEThere were a total of 174 tables and chairs in a tuckshop. There were 2 times as many chairs as tables. After 16 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 tuckshop?
|
Tables |
Chairs |
Total |
Before |
1 u |
2 u |
174 |
Change |
- ? |
- 16 |
|
After |
1 p |
4 p |
|
Number of tables and chairs at first
= 2 u + 1 u
= 174
3 u = 174
1 u = 174 ÷ 3 = 58
Number of chairs at first
= 2 u
= 2 x 58
= 116
Number of chairs left
= 116 - 16
= 100
4 p = 100
1 p = 100 ÷ 4 = 25
Number of tables thrown away from the tuckshop
= 58 - 25
= 33
Answer(s): 33