Three cars leave A for B in equal time intervals They reach B simultaneously and then leave for Poin...........

Quant (SSC) Time & distance

Three cars leave A for B in equal time intervals. They reach B simultaneously and then leave for Point C which is 240 km away from B. The first car arrives at C an hour after the second car. The third car, having reached C, immediately turns back and heads towards B. The first and the third car meet a point that is 80 km away from C. What is the difference between the speed of the first and the third car?

60 kmph

20 kmph

40 kmph

80 kmph

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Explanation:

Condition I states that the cars leave in equal intervals of time and arrive at the same time.
Or, the difference in the time taken between cars 1 and 2 should be equal to the time taken between cars 2 and 3.