Simple Interest Formulas

What is the formula to find the time using simple interest?

• time = Rate / (Principal * Interest)

• time = Principal / (Interest * Rate)

• time = Interest / (Principal * Rate)

• time = Principal * Rate / Interest

Tags

CCSS.7.RP.A.3

If the principal is $500, the rate is 5%, and the interest is $25, what is the time period?

• 4 years

• 1 year

• 3 years

• 2 years

Tags

CCSS.7.RP.A.3

How can you determine the principal using the simple interest formula?

• Principal = Interest * Rate * Time

• Principal = Interest / Rate * Time

• Principal = Interest / (Rate * Time)

• Principal = Interest / Rate + Time

Tags

CCSS.6.EE.B.7

If the time is 3 years, the rate is 8%, and the interest is $240, what is the principal?

• $1500

• $800

• $1200

• $1000

What is the formula to calculate the rate using simple interest?

• Rate = (Principal / Simple Interest) * 100

• Rate = (Simple Interest * Principal) / 100

• Rate = (Simple Interest / Principal) * 100

• Rate = (Principal - Simple Interest) * 100

Tags

CCSS.7.RP.A.3

If the principal is $1200, the time is 2 years, and the interest is $240, what is the rate?

• 0.2

• 0.15

• 0.1

• 0.25

Tags

CCSS.7.RP.A.3

If the time is 5 years, the principal is $800, and the interest is $200, what is the rate?

• 10%

• 15%

• 20%

• 5%

If the rate is 6%, the time is 4 years, and the interest is $480, what is the principal?

• $1800

• $2500

• $1500

• $2000

Tags

CCSS.7.RP.A.3

What is the formula to find the principal using simple interest?

• Principal = (Simple Interest * Rate) / Time

• Principal = Simple Interest * Rate * Time

• Principal = Simple Interest / (Rate * Time)

• Principal = (Simple Interest * 100) / (Rate * Time)

Tags

CCSS.7.RP.A.3

If the time is 2 years, the rate is 10%, and the interest is $100, what is the principal?

• 400

• 200

• 500

• 300

Tags

CCSS.6.EE.B.7