Question

The population of Illinois in 2000 was about 1.57 times its population in 1940. If the population of Illinois in 1940 was about 7.9 million, what was its population in 2000, to the nearest tenth of a million?

Answer 1

Answer: 12.4Million

Explanation:

Let x be the term we are looking for

Therefore;

Population in 2000 = x

Population in 1940 = 7.9Million

Recall population in 2000 is 1.57 times population in 1940

Therefore

1.57 * x = 7.9

x = 7.9m * 1.57

x = 12.403

Rounding off to the nearest tenth in Millions

= 12.4Million

Hope this helps