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Mathematics

10th - 12th Grade

CCSS covered

Used 319+ times

Rule of 72
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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Your returns (or interest rate) are 8% a year. How long before your investment doubles?

9 years
8 years
7 years
Never

Tags

CCSS.7.RP.A.3

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Your returns (or interest rate) are 9% a year. How long before your investment doubles?

9 years
8 years
7 years
They won't

Tags

CCSS.7.RP.A.3

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Your returns (or interest rate) are 6% a year. How long before your investment doubles?

18 years
16 years
12 years
8 years

Tags

CCSS.HSF.LE.A.4

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Your returns (or interest rate) are 1% a year because they are in a savings account. How long before your savings doubles?

72 years
36 years
1 year
They will never double

Tags

CCSS.HSF.LE.A.4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many years will it take $4000 to double with a 5% interest rate?

1440
14.4
55.5
80

Tags

CCSS.HSF.LE.A.4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What interest rate would you need to double $3500 in 9 years?

7%
10%
8%
38.8%

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.B.4

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

CCSS.HSF.BF.A.1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many years will it take $600 to double with 10% interest?

6 years
8.3 years
10 years
7.2 years

Tags

CCSS.HSF.LE.A.4

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