12.2.1 Data Handling, PT3 Focus Practice
Question 1:
Diagram below is a pictograph showing the number of pizzas sold in three months.
![](http://pt3mathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/6/2014/11/Picture58.png)
The price of one pizza is RM18. The total sales for those four months are RM2250.
Calculate the number of pizzas sold in April.
Solution:
Total number of pizzas sold in four months
Total number of pizzas sold in first three months
= 9 × 10
= 90
Number of pizzas sold in April
= 125 – 90
= 35
Question 2:
Diagram below is a bar chart showing the number of new houses sold over four days.
![](http://pt3mathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/6/2014/11/Picture59.png)
The total number of new houses sold on Wednesday and Thursday is 56.
Calculate the total number of new houses sold on Monday and Tuesday.
Solution:
Wednesday: 12 units
Thursday: 16 units
Number of houses represented by 1 unit
Monday: 14 units
Tuesday: 18 units
Total number of new houses sold on Monday and Tuesday
= (14 + 8) × 2
= 64