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Interest (Simple) - Rate From Interest, Principle, and Time

Level 3

This math topic focuses on calculating the rate of simple interest given the principal, interest amount, and time period. The problems presented here involve computing the rate as a percentage based on varying scenarios in which the principal amount, the accumulated interest, and the duration of investment (in years) are specified. Participants are then required to select the correct rate percentage from multiple choices. This topic is an application of simple interest formula manipulation, enhancing skills in percentage calculation and algebraic manipulation related to financial mathematics.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Interest (Simple) - Rate From Interest, Principle, and Time

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.

What is the rate in this simple interest situation?

Principle =$100Interest =$25Time =1yrsRate =?%\begin{align*}\text{Principle } &= \$100\\ \text{Interest } &= \$25\\ \text{Time } &= 1\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}

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Interest (Simple) - Rate From Interest, Principle, and Time Worksheet

Mobius Math Club logo
Math worksheet on 'Interest (Simple) - Rate From Interest, Principle, and Time (Level 3)'. Part of a broader unit on 'Percents and Simple Interest - Practice' Learn online: app.mobius.academy/math/units/percents_and_simple_interest_practice/
1
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$100\\ \text{Interest } &= \$25\\ \text{Time } &= 1\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
29
b
15
c
13
d
31
e
43
f
25
2
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$100\\ \text{Interest } &= \$140\\ \text{Time } &= 4\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
14
b
29
c
62
d
20
e
35
f
17
3
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$900\\ \text{Interest } &= \$90\\ \text{Time } &= 2\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
4
b
9
c
11
d
12
e
7
f
5
4
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$500\\ \text{Interest } &= \$1125\\ \text{Time } &= 9\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
31
b
35
c
17
d
29
e
25
f
15
5
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$100\\ \text{Interest } &= \$15\\ \text{Time } &= 3\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
10
b
7
c
3
d
1
e
5
f
13
6
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$900\\ \text{Interest } &= \$1890\\ \text{Time } &= 6\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
35
b
23
c
44
d
59
e
47
f
5
7
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$100\\ \text{Interest } &= \$280\\ \text{Time } &= 8\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
32
b
35
c
5
d
50
e
26
f
23