Math, asked by pinkey21dean, 10 months ago

of 75 students who took a test; 10 got 70%, 15 got 60%, 20 got 50%, 30 got 40%. if a pie chart is used to show the results, which angle represents those who got 60 marks

Answers

Answered by siddhantprasad8
1

When 10 people liked classical music, number of people surveyed is 100

So, When 1 person liked the classical music, number of people surveyed is  

100

10

When 20 people like the classical music, number of people surveyed

=

100

10

×

20

=

200

(ii) Which type of music is liked by the maximum number of people?

Answer: Light music is liked by maximum number of people.

(iii) If a cassette company were to make 1000 CD’s, how many of each type would they make?

Answer: Number of CD’s for different music

Semi Classical  

=

1000

×

20

%

=

200

Classical  

=

1000

×

10

%

=

100

Folk  

=

1000

×

30

%

=

300

Light  

=

1000

×

40

%

=

400

Answered by mhanifa
2

Answer:

72°

Step-by-step explanation:

Number of students= 75

70% result = 10, 60% result = 15, 50% result = 20, 40% result = 30

=========

Full number would be equal to full dial of pie chart which is =  360°

Then each student's pie is equivalent of:

  • 360°/75 = 4.8°

Number of those with 60% marks is 15 and corresponding angle is:

  • 15*4.8°= 72°

Answer is 72°

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