Question

# i) Percentage of people in the range 149.5 -159.5cm is equal to ______. ii) Percentage difference between the number of people in the range 159.5 - 169.5cm and 169.5 - 179.5cm is____.

A

30 , 16.66 %

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B

20 , 6.66%

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C

20 , 16.66 %

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D

30 , 6.66 %

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Solution

## The correct option is D 30 , 6.66 % i) Total number of people in the height range 149.5 – 159.5 cm = 9 Total number of people = 30 Percentage of people in the height range 149.5 – 159.5 cm = 930×100=30 % ii) Number of people in the height range 159.5-169.5 cm = 7 Number of people in the height range 169.5-179.5 cm = 5 ∴ Difference between the above ranges = 7-5 = 2 Percentage difference between 159.5 – 169.5 cm and 169.5 – 179.5 cm = 230×100=6.66%

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