allegansveritatem
Full Member
- Joined
- Jan 10, 2018
- Messages
- 962
Here is the problem:
29. A person walked from home at the rate of three miles per hour (mph), and then ran home along the same route at 6 mph. If the round trip took thirty minutes, how far did the person walk?
I tried to do this thus: let x = time walked at 3 mph let 0.5x = time at 6 mph
3x + 6(0.5x) = 30
3x+ 3x= 30
x=5
?
I don't see how this can be right. I mean if someone walks for 5 minutes at 3 miles an hour, he will have walked 1/12th of a mile....What is wrong with this other than plenty?
29. A person walked from home at the rate of three miles per hour (mph), and then ran home along the same route at 6 mph. If the round trip took thirty minutes, how far did the person walk?
I tried to do this thus: let x = time walked at 3 mph let 0.5x = time at 6 mph
3x + 6(0.5x) = 30
3x+ 3x= 30
x=5
?
I don't see how this can be right. I mean if someone walks for 5 minutes at 3 miles an hour, he will have walked 1/12th of a mile....What is wrong with this other than plenty?
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