Question
Download Solution PDFA and B start to walk from point P towards point Q. The distance between P and Q is 9 km. B starts 4 minutes after A. A, on reaching Q, immediately returns and after walking a kilometre meets B. If A’s speed is a kilometre in 10 minutes, what is B’s speed in kilometres per minute?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFDistance covered by A = 9 + 1 = 10 km
∴ Time taken by A = 10 × 10 = 100 min
∴ Time taken by B = 100 - 4 = 96 min
Distance covered by B = 9 - 1 = 8 km
∴ Speed of B = 8/96 = 1/12 km per minute
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