Discussion
Standing on a platform, Rajan told Kumar that Varanasi was more than 20 km but less than 25 km from there. Kumar knew that it was more than 18 km but less than 22 km from there. If both of them are correct, then which of the following is the true distance of Varanasi from the platform ?
Answer: D
Correct answer: 21 km
Rajan’s figure lies between 20 and 25 km, and Kumar’s between 18 and 22 km. If both are right the distance must satisfy both, so it lies in the overlap: \[ 20 < d < 22 \] The only whole number in that range is 21 km.
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