SOLUTION: Two bicyclists are 180 miles apart when they start racing towards each other. If their speeds are 14 mph and 16 mph respectively, how long will it be before they are twenty miles a

Question 1100462: Two bicyclists are 180 miles apart when they start racing towards each other. If their speeds are 14 mph and 16 mph respectively, how long will it be before they are twenty miles apart?
TYSM IF YOU HELP! PLEASE DO THIS ASAP THIS IS DUE TOMORROW >.<
Found 2 solutions by Alan3354, KMST:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Speeds are added when going in opposite directions.
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"respectively" serves no purpose.

Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
Racing towards each other, the distance between them will decrease at a rate of
14 mph + 16 mph = 30 mph.
We want the distance between them to change from the 180 miles at the start,
to 20 miles.
That is a difference of 180 miles - 20 miles = 160 miles
Decreasing the distance between then at a rate of 30 miles per hour,
it will take them .

You could write it in equations as
= time racing in hours until they are 20 miles apart

and 1/3 of an hour is ,
so it will be 5 hours and 20 minutes until they are 20 miles apart.
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