MCQOPTIONS
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MCQOPTIONS
| 1. |
A man travels three-fifths of a distance AB at a speed of 3a and remaining at the speed of 2b. If he goes from B to A and back at a speed of 5c in the same time then |
| A. | \[\frac{1}{a}+\frac{1}{b}=\frac{2}{c}\] |
| B. | \[\frac{1}{a}+\frac{1}{b}=2c\] |
| C. | \[a+b=c\] |
| D. | None of these |
| Answer» B. \[\frac{1}{a}+\frac{1}{b}=2c\] | |