What is the ratio of the number of mobile phones sold by Company B during July to those sold during December by the same company?

119:145

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116:135

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119:135

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Solution

The correct option is C
119:135

Total number of mobiles sold in the month of July = 45000 x $\frac{17}{100}$ = 7650

Mobile phones sold by Company B in the month of July = 7650 x $\frac{7}{15}$ = 3570

Total number of mobile phones sold in the month of December = 45000 x $\frac{16}{100}$ = 7200

Mobile phones sold by Company B in the month of December = 7200 x $\frac{9}{16}$ = 4050

$∴$ Required ratio = $\frac{3570}{4050}$ = $\frac{119}{135}$ = 119:135

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The number of mobile phones sold of Company A during July is approximately what per cent of the number of mobile phones sold of Company A during December?

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