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Sachin and Dhoni move towards town B starting from town A, at a speed of 40 km/hr and 45 km/hr, respectively. If Dhoni reaches town B 40 mi…

358745Medium DSSSB TGT Computer Science 0 replies 0 views
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Sachin and Dhoni move towards town B starting from town A, at a speed of 40 km/hr and 45 km/hr, respectively. If Dhoni reaches town B 40 minutes earlier than Sachin, what is the distance between towns A and B?
  • A238 km
  • B242 km
  • C240 km
  • D243 km
Correct answer: C

Explanation

Time difference is 40 minutes = 2/3 hour. So d/40 – d/45 = 2/3, which gives d × 5/1800 = 2/3 and d = 240 km.

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