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Pooja covers 30% of the journey at speed 40 km/hr and the remaining journey at speed 30 km/hr, then the approximate...
Solution
Ratio of distances covered with 40 km/hr and 30 km/hr respectively is = (30%) : (70%) = 3 : 7Hence the average speed of...
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When a person covers part of the journey at speed 'a' and the remaining part of the journey at speed 'b' and the...
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