Data was collected on a student’s typing rate and graph was drawn as shown below. Approximately how many words had this student typed in 30 seconds?
(a) 20
(b) 24
(c) 28
(d) 34
Solution:
To find the number of words typed in 30 seconds a vertical line from the x-axis is extended to the linear graph.
From the point where the vertical line intersects the linear graph a horizontal is dropped on the y axis.
From the y axis we can approximately determine the number of words typed in 30 seconds and that is 28 words
✦ Try This: The price of an item depends on the quantity demanded. The graph below shows the variation of price with respect to quantity demanded.
What is the price of a loaf of bread when: (a) Quantity demanded is 4000 loafs, (b) Quantity demanded is 6000 loafs
From the graph itis apparent that when: (a) When Demand is 4000 the price of loaf is Rs. 30, (b) When the demand is 6000 the price of loaf is Rs. 20.
☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 15
NCERT Exemplar Class 8 Maths Chapter 12 Problem 9
Data was collected on a student’s typing rate and graph was drawn as shown below. Approximately how many words had this student typed in 30 seconds? (a) 20, (b) 24, (c) 28, (d) 34
Summary:
From the graph drawn with the help of data on the student's typing rate it can be seen that approximately 28 words can be typed by the student in 30 seconds
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