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answer:
to draw apie chart
frequency
------------------ x 360 = the angle of the pie chart
total frequency
total frequency= 1200
1. x
------- x360= 90
1200
x= 300 marks
2.x
------- x 360= 60
1200
x= 200
3. x
-------- x= 210(360 -150)
1200
x=700
or
300+200=500
1200-500=700
Answer:
(i) she score in mathematics=90°=150marks
ii)she score in science=60°=120marks
iii) marks obtained in other subjects= 1200– 270°(150+120)=930marks
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