Question

a foreman wants to figure out how many total parts were produced in a factory before it was shut down. what information is needed to make the following calculation?
parts per day (parts/day)
use conversion factor number of parts produced (parts)

stupendous smoothie company had a booth at the state fair and wants to calculate the number of smoothies they made per bag of ice. what information is needed to make the following calculation?
total smoothies (smoothies)
make conversion factor smoothies per bag of ice (smoothies/bag)
total bags of ice (bags)

leroy needs to print a large number of copies. he wants to know how many packages of paper he will need. what information is needed to make the following calculation?
sheets of paper needed (sheets)
use conversion factor packages of paper (packages)

sean is a reporter. he has recorded several interviews on an audio tape and wants to know how much room is left on the tape. what information is needed to make the following calculation?

subtract minutes of tape remaining (min)
total tape length (min)

a gardener has set up a drip irrigation system and wants to calculate the amount of water he is using per hour. what information is needed to make the following calculation?

make conversion factor gallons per hour (gal/hr)
hours irrigation is on (hrs)

Explanation:

Step1: Identify first missing variable

To find total parts, we use:
$\text{Total parts} = \text{Parts per day} \times \text{Number of days operating}$
Missing value: Number of operating days (days)

Step2: Confirm second problem (complete)

Given:
$\text{Smoothies per bag} = \frac{\text{Total smoothies}}{\text{Total bags of ice}}$
This is complete, no missing info.

Step3: Identify third missing variable

To find paper packages:
$\text{Packages} = \frac{\text{Total sheets needed}}{\text{Sheets per package}}$
Missing value: Sheets per package (sheets/package)

Step4: Identify fourth missing variable

To find remaining tape:
$\text{Remaining time} = \text{Total tape length} - \text{Used tape time}$
Missing value: Used tape time (min)

Step5: Identify fifth missing variable

To find gallons per hour:
$\text{Gallons per hour} = \frac{\text{Total gallons used}}{\text{Hours irrigation is on}}$
Missing value: Total gallons of water used (gal)

Answer:

1. Number of days the factory operated (days)
2. (This calculation is already complete with the provided information)
3. Number of sheets of paper per package (sheets/package)
4. Total minutes of tape already used (min)
5. Total gallons of water used (gal)