PSLE The bar graphs show the sale of child tickets and adult tickets to a bird park over four days. The scale of the graph for adult tickets is not shown.
- How many child tickets were sold in total on Monday and Wednesday?
- The ratio of the number of adult tickets sold on Wednesday to the total number of tickets sold on that day was 4 : 5. How many adult tickets were sold on Tuesday?
(a)
Number of child tickets sold on Monday = 50
Number of child tickets sold on Tuesday = 80
Number of child tickets sold on Wednesday = 100
Number of child tickets sold on Thursday = 10
Total number of child tickets sold on Monday and Wednesday
= 50 + 100
= 150
(b)
Total number of tickets sold on Wednesday = 5 u
Number of adult tickets sold on Wednesday = 4 u
Number of child tickets sold on Wednesday
= 5 u - 4 u
= 1 u
1 u = 100
Number of adult tickets sold on Wednesday
= 4 u
= 4 x 100
= 400
2 p = 400
1 p = 400 ÷ 2 = 200
Number of adult tickets sold on Tuesday
= 4 p
= 4 x 200
= 800
Answer(s): (a) 150; (b) 800