Unit 3 Test Corrections Part 2 Corrected

A country has a crude birth rate of 15 births per 1,000 people and a crude death rate of 8 deaths per 1,000 people. What is the annual growth rate percentage?

• 0.7%

• 1.5%

• 2.5%

• 3.5%

The crude birth rate of a region is 20 per 1,000 people, and the crude death rate is 12 per 1,000 people. Calculate the growth rate percentage.

• 0.8%

• 1.2%

• 2.0%

• 3.0%

Tags

NGSS.MS-ESS3-4

A city reports a crude birth rate of 10 per 1,000 people and a crude death rate of 5 per 1,000 people. Find the annual growth rate percentage.

• 0.5%

• 1.0%

• 1.5%

• 2.0%

If a population grows at a rate of 2% per year, how many years will it take for the population to double?

• 25 years

• 35 years

• 50 years

• 70 years

Tags

NGSS.HS-LS2-2

A country has a growth rate of 1.5% per year. Calculate the number of years it will take for its population to double using the Rule of 70.

• 30 years

• 40 years

• 46.7 years

• 50 years

A city has a growth rate of 3.5% per year. What is its doubling time?

• 10 years

• 20 years

• 25 years

• 30 years

The population of a town was 25,000 last year, and it increased to 30,000 this year. Calculate the percent increase in population.

• 10%

• 15%

• 20%

• 25%

A farmer had 200 chickens last year, and this year the number has increased to 260. What is the percent increase in the number of chickens?

• 20%

• 25%

• 30%

• 35%

The cost of a product was $50 last month and is now $65. Find the percent increase in the cost of the product.

• 20%

• 25%

• 30%

• 35%

Out of 200 students in a school, 60 students scored above 90% on their final exam. What percentage of the students scored above 90%?

• 20%

• 25%

• 30%

• 35%