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Question : The pie chart given below shows the sales of 7 different companies. The total sales of all these 7 companies are 3600. The sale of a particular company is shown in terms of degree with respect to the total sales of all these 7 companies.


Which of the following statements is correct?
I. The ratio of the average sales of companies P and Q to the average sales of T and U is 9 : 10.
II. The difference between the total sales of companies R and S and the sales of V is 1050.

Option 1: Neither I nor II

Option 2: Only II

Option 3: Only I

Option 4: Both I and II


Team Careers360 6th Jan, 2024
Answer (1)
Team Careers360 20th Jan, 2024

Correct Answer: Only I


Solution : Total sales of 7 companies = 3600
Note that the average sale is proportional to the angle in the pie chart.
Sale of company X = $\frac{\text{Angle of that company in pie chart}}{\text{Total angle that is 360°}}\times$Total sales of all companies
I. Sale of company P = $\frac{9°}{360°}\times 3600$ = 90
Sale of company Q = $\frac{36°}{360°}\times 3600$ = 360
Sale of company U = $\frac{35°}{360°}\times 3600$ = 350
Sale of company T = $\frac{15°}{360°}\times 3600$ = 150
Average sale of company P and Q =$\frac{90+360}{2}$ = 225
Average sale of company U and T =$\frac{350+150}{2}$ = 250
So, the ratio of the average sales of companies P and Q to the average sales of T and U
= 225 : 250 = 9 : 10
So, statement I is true.
II. Sale of company R = $\frac{140°}{360°}\times 3600$ = 1400
Sale of company S = $\frac{50°}{360°}\times 3600$ = 500
Sale of company V = $\frac{75°}{360°}\times 3600$ = 750
The difference between the total sales of companies R and S and the sales of V
= (1400 + 500) – 750 = 1150
So, statement II is false.
Hence, the correct answer is only I.

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