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| Math Central | Quandaries & Queries |
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Question from Kieran, a student: Hello! I was wondering if you could help me with this question! Thank you A man travels a total of 8km in 6 hours if his speed was xkm/4hours in the first stage then his speed was 8-x/2hours in the second part. If the average speed for the first leg of the journey was 1.1km/h faster than the second part: find x |
Kieran,
On the first stage he travelled x km in 4 hours sp that's x/4 km per hour.
On the second stage he travelled 8 - x km in 2 hours sp that's (8 - x)/2 km per hour.
x/4 is 1.1 larger than (8 - x)/2. Solve for x.
Penny
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