Ahigh school mathematics teacher can grade a set of exams in 5 hours working alone. if their student teacher them, it will take them 3 hours to grade the exams together. how long would it take the student to grade them exams if they worked alone?

type your answer rounded to two decimal places below
it would take the student teacher hours to grade alone.

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. another supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which would you choose and how much would you save with that choice? show calculator try it! if you buy 1000 ml bags, how many do you need to buy each month? type your answer in the space provided and click on the check answer button.

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.