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Multiple Choice Questions

Points A and B are 60km apart A bus starts from A and another from B at the same time If they go in ...........

Quantitative Aptitude (CDS) Algebra

Points A and B are 60km apart. A bus starts from A and another from B at the same time. If they go in the same direction they meet in 6 hours and if they go in opposite direction they meet in 2 hours. The speed of the bus with greater speed is:

10 km/hr

20 km/hr

30 km/hr

40 km/hr

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Explanation:

Let their speeds be x km/hr and y km/hr.
When they move in same direction,
let them meet at M.
Then, AM - BM = AB
Linear Equations Aptitude Questions with Short-tricks
∴ 6x - 6y = 60 or x - y = 10 ...(i)
When they move in opposite direction,
let them meet at N.
Then, AN + BN = AB