Algebra
posted by Sandra .
John walked 10 miles on Saturday. He walked twice as fast on the second 5 miles of his walk than he walked on the first 5 miles of his walk. Which expression represents the time he spent walking? Let x = John's speed on the first half of his walk.

since time = distance/speed, we have
5/x + 5/(2x) = 15/(2x) 
Thanks much

1. A
2. B
3. A
4. D
5. B
6. D
7. A
8. B
9. C
10.D
11.C
12.C
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1. A
2. B
3. A
4. D
5. B
6. D
7. A
8. B
9. C
10.D
11.C
12.C