Page 347 - Start Up Mathematics_8 (Non CCE)

2. The following graph shows the temperature forecast and the actual temperature for each day of a week.
(a) On which days was the forecast temperature the same as the actual temperature?
(b) What was the maximum forecast temperature during the week?
(c) What was the minimum actual temperature during the week?
(d) On which day did the actual temperature differ the most from the forecast temperature?

Y
Forecast Actual
35

30

25
Temperature (°C) 20

15

10

5

X
Mon Tue Wed Thu Fri Sat Sun
Days

Exemplar Problems

1. Monthly salary of a person is ` 15,000. The central angle of the sector representing his expenses on food
and house rent on a pie chart is 60°. The amount he spends on food and house rent is:
(a) ` 5,000 (b) ` 2,500 (c) ` 6,000 (d) ` 9000
2. The coordinates of a point at a distance of 3 units from the x axis and 6 units from the y axis is:
(a) (0, 3) (b) (6, 0) (c) (3, 6) (d) (6, 3)
3. The point where the two axes intersect is called the __________.
4. The y-coordinate of any point lying on the x-axis will be zero. (True/False)
5. Following is a pie chart showing the amount spent in rupees (in thousands) (8) (9)
by a company on various modes of advertising for a product. (7) 9
1. Television 2. Newspapers 3. Magazines 14 15 (1)
4. Radio 5. Business papers 6. Direct mails (6) 40
39
7. Yellow pages 8. Outdoor 9. Miscellaneous 42
Now answer the following questions: (5) 11 7 23 (2)
1. Which type of media advertising is the greatest amount of the total? (4)
2. Which type of media advertising is the least amount of the total? (3)
3. What percent of the total advertising amount is spent on direct mail campaigns?
4. What percent of the advertising amount is spent on newspaper and magazine advertisements?
5. What media types do you think are included in miscellaneous? Why aren’t those media types given
their own category?

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