Question

michael is renting a bicycle for $12 per hour.

which of the following is equivalent to this rate?

a.) 20 cents per minute

b.) 7 cents per minute

c.) 5 cents per minute

d.) 14 cents per minute

Explanation:

Convert dollars to cents

Using the Unit Conversion and Dimensional Analysis knowledge points

$$ \$12 = 12 \times 100\text{ cents} = 1200\text{ cents} $$

Convert hours to minutes

Using the Unit Conversion and Dimensional Analysis knowledge points

$$ 1\text{ hour} = 60\text{ minutes} $$

Calculate the rate in cents per minute

Using the Unit Conversion and Dimensional Analysis knowledge points

$$ \text{Rate} = \frac{1200\text{ cents}}{60\text{ minutes}} = 20\text{ cents per minute} $$

Answer:

• a.) 20 cents per minute (Correct answer)
• b.) 7 cents per minute
• c.) 5 cents per minute
• d.) 14 cents per minute