Posted by **M.** on Thursday, January 7, 2010 at 7:40pm.

? reads,"7th place driver had a time that was 18.5 min slower thatn the driver ahead of him(2hr 43min 7sec), what was his time in hrs, min & sec.? What was the diff. btwn 1st and 7th? Calculate the winner's time in hrs. only(answer correct to 3 decimal places). Winners time: 2hrs. 37min. Several more questions like these?

Thanks!

- 7th grade MATH -
**PsyDAG**, Friday, January 8, 2010 at 2:19pm
Each minute has 60 seconds.

18.5 minutes = 18 minutes 30 seconds

Add that to 2 hr 43 min 7 seconds for the driver ahead of him, since his time (7th) will be greater.

Subtract 2 hr 37 min from the previous answer for difference between 1st and 7th.

Winner's time = 2 hours and 37 min. There are 60 minutes in an hour. Get minutes as fraction of hour and convert to a decimal.

See if these principles will help you with the other questions.

- 7th grade MATH -
**zabeion**, Monday, January 7, 2013 at 10:27pm
75 seconds:2 minutes, as a fraction

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