Q. Two cars start at the same time from the same location and go in the same direction. The speed of the first car is 50 km\/h and the speed of the second car is 60 km\/h. The number of hours it takes for the distance between the two cars to be 20 km is .<\/p>\n\n\n\n
(A) 1<\/p>\n\n\n\n
(B) 2<\/p>\n\n\n\n
(C) 3<\/p>\n\n\n\n
(D) 6<\/p>\n\n\n\n
Ans: 2<\/p>\n\n\n\n
Solution:<\/p>\n\n\n\n
Speed of car A = 50 km\/hr
Speed of car B = 60 km\/hr<\/p>\n\n\n\n
Since, both cars A and B are moving in same direction, the relative speed = 60 – 50 = 10 km\/hr<\/p>\n\n\n\n
Distance required between them = 20 km<\/p>\n\n\n\n
\u2234 Time=Distance\/Speed=20\/10=2 hrs<\/p>\n","protected":false},"excerpt":{"rendered":"
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