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Two bike riders, x and y both start at 2pm riding towards each other from 40km apart. x rides at 30km an hour, y at 20km an hour. If they meet after t hours, find when and where they meet.
If you feel you know how to answer the problem put the solution in the comments box below.
Remember to show all working. : )
Two bike riders, x and y both start at 2pm riding towards each other from 40km apart. x rides at 30km an hour, y at 20km an hour. If they meet after t hours, find when and where they meet.
Let the time that x and y travel be t
ReplyDeletex = 30t
y = 20t
20t + 30t = 40
50t = 40
t = 4/5 hr
t = 48 mins
Therefore x = 30 x 4/5
= 6 x 4
= 24kms
Therefore y = 20 x 4/5
= 4 x 4
= 16kms
Therefore - The two cyclists meet at 2:48 pm, 24kms from where x started and 16kms from where y started.