A boy can swim a certain distance downstream in 3 hours and return in 5 hours. If the rate of stream is 6 kmph then what is the speed of boy in still water?
Let the speed of the boy in still water be x kmph. Then, (x + 6) × 3 = (x – 6) × 5 => 3x + 18 = 5x - 30 => 2x = 48 => x = 24 kmph
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Ajay started a work and left working after 8 days. Vijay finished the remaining work in next 36 days. Had Ajay left the work after working for 12 days t...
A person travelled for the first 150 km at a certain speed in 6 hours. After that, the speed of the person decreased by 6 km/h. If the person took a tot...
