Question

The city of Toronto’s population rose from 2,000,000 to 4,500,000 in the last twenty years of the twentieth

century. What was the annual average percentage increase in population for that period?

(a) 2.5% (b) 22.5% (c) 11.25% (d) 225% (e) none of these​

Answer 1

Answer:

E

Step-by-step explanation:

We will first find the percentage increase of 20 years. Then we will divide that by 20 to get the annual average percentage increase.

To get the percentage increase, we will find the increased amount and divide that by original population (2,000,000). Multiply that by 100 to get the percentage.

So,

Increased amount = 4,500,000 - 2,000,000 = 2,500,000

Now the percentage increase:

$\frac{2,500,000}{2,000,000}*100=125$

So, in 20 years, the percentage increase is 125%

Per Year = 125/20 = 6.25% average per year

No correct answer in the answer choices from A through D, so E is the correct answer, None of These.