PSLE The bar graphs show the sale of child tickets and adult tickets to a zoo 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 2 : 3. How many adult tickets were sold on Tuesday?
(a)
Number of child tickets sold on Monday = 25
Number of child tickets sold on Tuesday = 50
Number of child tickets sold on Wednesday = 20
Number of child tickets sold on Thursday = 5
Total number of child tickets sold on Monday and Wednesday
= 25 + 20
= 45
(b)
Total number of tickets sold on Wednesday = 3 u
Number of adult tickets sold on Wednesday = 2 u
Number of child tickets sold on Wednesday
= 3 u - 2 u
= 1 u
1 u = 20
Number of adult tickets sold on Wednesday
= 2 u
= 2 x 20
= 40
2 p = 40
1 p = 40 ÷ 2 = 20
Number of adult tickets sold on Tuesday
= 1 p
= 1 x 20
= 20
Answer(s): (a) 45; (b) 20