engineering recuitment MAHATRANSCO AE Electrical Mock Test Quantitative Aptitude Speed Time and Distance Partial Speed
Yashvendra travels 3/5th of the distance from Kolkata to Allahabad by bus at a speed of 6a and the remaining distance by auto at a speed of 4b. If he goes back from Allahabad to Kolkata by train which is moving with a speed of 10c, then find the relation between a, b and c if he takes same time in both way journey.
1
1/a - 1/b = 1/c
2
1/a + 1/b = 1/c
3
1/c + 1/b = 1/a
4
1/c + 1/a = 1/b
5
None of these