Question

I need the answer for 4. and 5.

Answer 1

Exercise 4

A grow from 13.1 millions to 14.4 millions means to grow

$14.4-13.1 = 1.3$

millions. So, the question is: which percentage of 13.1 is 1.3? Well, we have to find a number x such that

$\dfrac{x}{100}\cdot 13.3 = 1.3$

Solving for x, you have

$x = \dfrac{1.3 \cdot 100}{13.3} \approx 9.92$

Exercise 5

27% is a bit more than 25%, which is a quarter. So, we expect to find a pie chart with one slice occupying roughly one quarter of the pie. The example that best suits this requirement is B (A is almost half, and C is less than one quarter).