Question

i) Percentage of people in the range of 149.5 -159.5 cm is equal to ______

ii) Percentage difference between ranges 159.5 - 169.5 cm and 169.5 - 179.5cm is

• A. 30 , 16.66 %
• B. 20 , 6.66%
• C. 20 , 16.66 %
• D. 30 , 6.66 %

Answer 1

The correct option is D

30 , 6.66 %

i) No. of people in the range of 149.5 – 159.5 cm = 9

Total no. of people = 30

Percentage of people in the range of 149.5 – 159.5 cm
= $\frac{9}{30}\times 100=30$ %

ii) Solution: Number of people in the range of 159.5-169.5 cm = 7

Number of people in the range of 169.5-179.5 cm = 5

difference between the two ranges = 7- 5=2

Percentage difference between between the two ranges = $\frac{2}{30}\times 100=6.66$%