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Let the total distance be '100d' km. Time taken by Ravi to cover 40% distance = (40d/20) = '2d' hours Time taken by Ravi to cover 30% distance = (30d/10) = '3d' hours Time taken by Ravi to cover remaining distance: = (100d - 40d - 30d) ÷ 12 = (30d/12) = '2.5d' hours So, average speed = 100d ÷ (2d + 3d + 2.5d) = (100/7.5) = (40/3) km/h = (40/3) X (5/18) = (100/27) m/s
BIS certification for drinking water is a:
Aflatoxin is an example of
Aflatoxin is a
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