Multi-step rational number word problems

The topic  appears under the 7th Grade Math Mission. This exercise

Types of Problems
There are three types of problems in this exercise:


 * 1) Perform the division conversions needed: This problem describes a situation where a person is trying to make an object that takes a certain amount of time with a certain number of friends. The student is asked to figure out how much time it will take.Mrnwp1.png
 * 2) Multiply to get the total answer: This problem asks for a total amount of two other quantities that are not necessarily equally weighted. The student is asked to find the total amount needed for the situation.Mrnwp2.png
 * 3) Taxicab results: This problem provides a many-step problem involving a taxicab. The student is asked to find out how much the trip costs, or how much money will be left after the trip.Mrnwp3.png

Strategies
Rational numbers are not really vital to completing this problem, whereas an ability to read math well is likely more valuable.
 * 1) The general form for the division problem is to take the number of minutes to make the item, multiply by the number of items needed, divide by sixty to find the number of hours, and then divide by the number of people doing the work.
 * 2) The general form on the taxicab problem is to take the initial fee, then and add the number of units multiplied by the fee per unit, then add the tip. This amount is the total and the amount left would be this number subtracted from the amount the person had to begin with.