which has the best expenditure?
The following table shows the marks scored by students in das examinat
Represent by a bar graph. Answer the following questions
Number of students
10
22
21
819
9
How many students got more than 80% marks?
How many students got less than or equal to 70% marks
the teacher announces in the class that students getting more than 80% marks bus
less than or equal to 90% marks are very good students, then home
mar
students
in the class are very good?
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Answer:
The central angle for various components may be calculated as follows.
Particulars Expenses(Rs.) Central angle
Food 4800
12000
4800
×360
o
=144
o
House rent 2400
12000
2400
×360
o
=72
o
Clothing 1600
12000
1600
×360
o
=48
o
Education 800
12000
800
×360
o
=24
o
Savings 1000
12000
1000
×360
o
=30
o
Miscellaneous 1400
12000
1400
×360
o
=42
o
Total 12000 360
o
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