Question

The populations of two towns, town A and town B, are being compared. The population of town A is 8 x 104 and the population of B is 4 x 105 How many times greater is the population of town B than town A? A.5 B.50 C.500 D.5000

Answer 1

The population of town A is 8 x 10^4

The population of town B is 4 x 10^5

it is required to find,

How many times greater is the population of town B than town A ?

So, divide the population of B by the population of A

So,

$\frac{4\cdot10^5}{8\cdot10^4}=\frac{4\cdot10\cdot10^4}{8\cdot10^4}=\frac{4\cdot10}{8}=\frac{40}{8}=5$

so, the answer is option A. 5