SOLUTION: 12.on a man 1 1/2 inches represent 45 miles. If two cities are 5 inches apart on a map, how far are they in reality? I mutiplied 45 times 5 and got 225 miles is this right?
13.
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Question 118588This question is from textbook Basic Mathematics
: 12.on a man 1 1/2 inches represent 45 miles. If two cities are 5 inches apart on a map, how far are they in reality? I mutiplied 45 times 5 and got 225 miles is this right?
13. A quality control inspector examined 42 light bulbs and found 7 defective. At this rate, how many defective bulbs will there be in a lot of 2682? I divided 2682 by 7 and got 383.
14. It takes Bob 30 minutes to type three-fourths of a page of his term paper. At this rate, how long will it take to type a 6 page paper? I multiplied 30 by 6 and divided that answer by 4 and got 240.
15. A train traveled 264 miles in 6 hours. At this rate, how far will it travel in 11 hours? I multiplied 264 by 11 and got 2904 miles.
thanks very much
This question is from textbook Basic Mathematics
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
12. This is a ratio problem
In this problem,
multiply both sides by
mi answer
-------------------------
13. This is another ratio problem
multiply both sides by 6
defective answer
-------------------------
14. Also a ratio
multiply both sides by
minutes which is the same as
hours answer
------------------------
15. This can be thought of as a ratio, or use the formula
I'll use the formula
hrs
mi/hr
mi answer
You could have come up with a ballpark number just by saying
"11 hours is almost twice 6 hours. The train would travel
almost twice as far, or just under 528 mi."
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