Word Problem on Unit Rates Associated with Ratios of Whole Numbers: Decimal Answers


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A candy factory used 6 gallons of syrup to make 5 batches of candy. What is the rate of syrup used in gallons per batch?

Solution

Step 1:

Quantity of syrup used = 6 gallons

Number of candies made = 5 batches

Step 2:

Rate of syrup used = $\frac{6}{5} = 1.2$ gallons per batch

It took a pet store 9 weeks to sell 19 pounds of cat food. What is the rate of cat food sold in pounds per week?

Solution

Step 1:

Quantity of cat food sold = 19 pounds

Number of weeks taken = 9 weeks

Step 2:

Rate of cat food sold = $\frac{19}{9} = 2.11$ pounds per week

A machine worked for 4 hours and used 5 kilowatts of electricity. What is the rate of energy consumed in kilowatts per hour?

Solution

Step 1:

Quantity of energy consumed = 5 kilowatts

Number of hours = 4 hours

Step 2:

Rate of energy consumption = $\frac{5}{4} = 1.25$ kilowatts per hour

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