Page 1 Question:11 Tick ? the correct answer: A man's monthly salary is Rs 2400 and his monthly expenses on travel are Rs 250. The central angle of the sector representing travel expenses in the pie chart would be a 30° b 37 1 2 ° c 45° d 60° Solution: b 37 1 2 ° Central angle of the sector representing travel expenses = value of expenses on travel monthly income ×360 ° = 250 2400 ×360 ° = 37 1 2 ° Question:12 Tick ? the correct answer: If 35% of the people residing in a locality are Sikhs then the central angle of the sector representing the Sikh community in the pie chart would be a 108° b 115° c 126° d 135° Solution: c 126° Central angle of the sector representing the sikh community = value (in %) of the sikh community 100 ×360 ° = 35 100 ×360 ° = 126° Question:13 Tick ? the correct answer: If in the pie chart representing the number of students opting for different streams of study out of a total strength of 1650 students, the central angle of the sector representing arts students is 48° then what is the number of students who opted for arts stream? a 220 b 240 c 275 d 320 Solution: a 220 Let the required number of students be x. Then we have: x 1650 ×360 = 48 ? 360 x 1650 = 48 ? x = 48 × 1650 360 ? x = 220Hence, the number of students who opted for arts stream is 220. Question:14 Tick ? the correct answer: In the pie chart representing the percentages of students having interest in reading various kinds of books, the central angle of the sector representing students reading novels is 81°. What is the percentage of students interested in reading novels? a 15% b 18% c 22 1 2 % d 27 1 2 % Solution: c 22 1 2 % ( ) ( ) ( ) ( ) ( ) ( ) Page 2 Question:11 Tick ? the correct answer: A man's monthly salary is Rs 2400 and his monthly expenses on travel are Rs 250. The central angle of the sector representing travel expenses in the pie chart would be a 30° b 37 1 2 ° c 45° d 60° Solution: b 37 1 2 ° Central angle of the sector representing travel expenses = value of expenses on travel monthly income ×360 ° = 250 2400 ×360 ° = 37 1 2 ° Question:12 Tick ? the correct answer: If 35% of the people residing in a locality are Sikhs then the central angle of the sector representing the Sikh community in the pie chart would be a 108° b 115° c 126° d 135° Solution: c 126° Central angle of the sector representing the sikh community = value (in %) of the sikh community 100 ×360 ° = 35 100 ×360 ° = 126° Question:13 Tick ? the correct answer: If in the pie chart representing the number of students opting for different streams of study out of a total strength of 1650 students, the central angle of the sector representing arts students is 48° then what is the number of students who opted for arts stream? a 220 b 240 c 275 d 320 Solution: a 220 Let the required number of students be x. Then we have: x 1650 ×360 = 48 ? 360 x 1650 = 48 ? x = 48 × 1650 360 ? x = 220Hence, the number of students who opted for arts stream is 220. Question:14 Tick ? the correct answer: In the pie chart representing the percentages of students having interest in reading various kinds of books, the central angle of the sector representing students reading novels is 81°. What is the percentage of students interested in reading novels? a 15% b 18% c 22 1 2 % d 27 1 2 % Solution: c 22 1 2 % ( ) ( ) ( ) ( ) ( ) ( ) Let the required percentage be x. Then we have: x 100 ×360 = 81 ? 360 x 100 = 81 ? x = 81 × 100 360 ? x = 45 2 ? x = 22 1 2 Hence, the percentage of students who are interested in reading novels is ( ) ( )Read More

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