Question
Speed of boat is 10 km/hr. Speed of the stream is 20%
less than speed of boat. Then find time taken by boat to go 90 km downstream?Solution
Speed of stream = 10 × (80/100) = 8 km/hr Time taken to go 90 km = 90/(10 + 8) = 5 hrs
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Ramsay retest is used for
