What is the Rule of Seventy used for?

Doubling Time and Growth Rates

Interactive Video
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Mathematics
•
9th - 10th Grade
•
Hard

Thomas White
FREE Resource
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Estimating the inflation rate over a decade
Calculating the time it takes for a variable to double at a given growth rate
Predicting future stock market trends
Determining the annual growth rate of a variable
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the Rule of Seventy formula expressed?
Seventy multiplied by the growth rate
Seventy divided by the growth rate
Growth rate divided by seventy
Seventy plus the growth rate
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a country's GDP per capita grows at 5% annually, how many years will it take to double?
20 years
10 years
35 years
14 years
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At a 7% annual growth rate, how long does it take for GDP per capita to double?
7 years
20 years
10 years
14 years
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key consideration when using the Rule of Seventy formula?
Multiplying the growth rate by 100
Entering the growth rate as a decimal
Subtracting the growth rate from seventy
Using the growth rate as a percentage
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the doubling time for an investment growing at 1% annually?
35 years
70 years
50 years
100 years
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the growth rate is 2%, how many years will it take for GDP per capita to double?
25 years
35 years
45 years
55 years
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