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Max have 6 rolls of wire 9 2/5 per roll and 7 rolls 16 3/4 per roll wire do they...
Max have 6 rolls of wire 9 2/5 per roll and 7 rolls 16 3/4 per roll wire do they need in order to do a job if it requires 220 ft of wire
Max has 6 rolls of wire 9 2/5 ft per roll and 7 rolls 16 3/4 ft per roll. Does he have enough wire to complete a 220 Ft project?
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High School Teacher
The first thing you need to do with any word problem is make sure that you fully understand what is being asked. I have edited your question to be what I believe you were trying to ask. Reread the problem and make sure that I have correctly interpreted your question.
In this problem you can start with an estimate because you are being asked if you have enough, not for an exact amount. If you begin with front end estimation, which would be just look at the whole numbers you would have the following:
6 rolls times 9 feet + 7 rolls times 16 feet
54 feet + 112 feet
If the problem is supposed to be asking how much more wire you will need, then you need to calculate exact amounts.
6 x 9 2/5 + 7 x 16 3/4 = 56 2/5 + 117 1/4 = 56 8/20 + 117 5/20 = 173 13/20 feet
Total you need is 220 feet 220 - 173 13/20 = 46 7/20 additional feet of wire needed
Posted by hustoncmk on September 17, 2010 at 4:32 AM (Answer #1)
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