# 5.06 Simple interest

## Interactive practice questions

If $\$16716$$16716 of simple interest was earned in 77 years, how much interest was earned each: a year? b month? Easy Approx 2 minutes Sign up to try all questions Calculate the simple interest earned on an investment of \1050$$1050 at a semiannual rate of $1.1%$1.1% for $9$9 years.

Calculate the simple interest earned on an investment of $\$7000$$7000 at 1.8%1.8% per quarter for 99 years. Give your answer to the nearest cent. The simple interest on an investment of \3600$$3600 over $2$2 years is $\$504.00504.00.

If the annual interest rate is $R$R, find $R$R as a percentage to the nearest one decimal place.

Enter each line of working as an equation.

### Outcomes

#### A.SSE.A.1'

Interpret expressions that represent a quantity in terms of its context. 'Limited to linear expressions and exponential expressions with integer exponents.

#### A.SSE.A.1.A'

Interpret parts of an expression, such as terms, factors, and coefficients. 'Limited to linear expressions and exponential expressions with integer exponents

#### F.BF.A.1'

Write a function that describes a relationship between two quantities. 'Linear and exponential (integer inputs)

#### F.BF.A.1.A'

Determine an explicit expression, a recursive process, or steps for calculation from a context. 'Linear and exponential (integer inputs)

#### F.LE.A.1

Distinguish between situations that can be modeled with linear functions and with exponential functions.

#### F.LE.A.1.B

Recognize situations in which one quantity changes at a constant rate per unit interval relative to another.