SOLUTION: Brett started a 1/2 marathon at 6:30 A.M. and he did not cross the finish line until 1:05 P.M. How long did it take for Bret to finish the race ? Another question is John is tr

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Brett started a 1/2 marathon at 6:30 A.M. and he did not cross the finish line until 1:05 P.M. How long did it take for Bret to finish the race ? Another question is John is tr      Log On

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Question 9945: Brett started a 1/2 marathon at 6:30 A.M. and he did not cross the finish line until 1:05 P.M. How long did it take for Bret to finish the race ?
Another question is John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time ?
The other question is on a map 1/3 inch equals 15 miles. The distance between two towns on a map is 3 2/3 inches. How many miles are actually between to two towns ?

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
1)
Bret started at 6:30 am and finished at 1:05 pm. To find the difference between these two times, you would change the times to the 24-hour clock (also known as military time).
On the 24-hour clock, 6:30 am is 06:30 and 1:05 pm is 13:05.
Subtract 6:30 from 13:05.
Change the 13:05 to 12:65 so that you can do the subtraction.
12:65-6:30 = 6:35 or 6 hours and 35 minutes.
2)
John needs to travel 28 miles in 30 minutes, so his speed in mph would be:
2(28 miles) in 2(30 mins) or 56 miles in 60 mins. = 56 mph
3) Since the map scale is 1/3 inch = 15 miles, you need to find out how many times will 1/3 go into 3 2/3 then multiply that by 15 miles.
3 2/3 = 11/3
%2811%2F3%29%2F%281%2F3%29+=+%2811%2F3%29%283%2F1%29 = 11 Now multiply this by 15 miles.
%2811%29%2815%29+=+165+miles
The actual distance between the two towns is 165 miles.