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The pie chart represents fruits on display in a grocery shop. If there are 60 oranges on display, how many apples are there?

A. 40

B. 80

C. 90

D. 70

**Comments**

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The angle of orange is unknown but can be found since the sum of all angles in a pie chart must be 360. That is,

let x be the unknow angle of orange

60 + 100 + 120 + x = 360

280 + x = 360

Subtract 280 from both sides

x = 360 - 280

x = 80

Thus, the angle of orange is 80^{o}

Since the number of oranges is given as 60, we can find that of apple by comparing the angle and number of apples with that of orangle.

let y be the number of apples displayed

That is,

80^{o}/60 = 120^{o}/y

cross multiply,

80y = 60 x 120

80y = 7200

divide both sides by 80

y = 7200/80

y = 90

Therefore, there are 90 apples on display

**Ans C**

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