Study the line graph and answer the given questions. The graph shows the profit percentage from sales of two different mobile phones from the same company manufactured in the given regions.
Q. Expenditure of production of mobile B in North America and China were in the ratio 5:7 respectively. What was the respective ratio of incomes?

13:8

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8:13

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10:13

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13:10

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None of these

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Solution

The correct option is C 10:13
Expenditure in production of mobile B in North America = 5x
Expenditure for production mobile B in China = 7x
Income from sale of mobile B produced in North America $= 5 x \times 1.40$
= 7x
Income from sale of mobile B in China $= 7 x \times 1.30$
=9.1x
Required ratio =7x : 9.1x
= 10:13

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The correct option is C 10:13Expenditure in production of mobile B in North America = 5x Expenditure for production mobile B in China = 7x Income from sale of mobile B produced in North America =5x×1.40 = 7x Income from sale of mobile B in China =7x×1.30 =9.1x Required ratio =7x : 9.1x = 10:13