An elevator descends into a mine shaft at the rate of 5 meter per minute. if the descending starts from 20m above the ground level, how long will it take to reach - 240 m
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time taken to cover 5 meter = 1min
total level in Meter = 240+20 = 260m
total time to cover 260m = 260/5 = 52min
total level in Meter = 240+20 = 260m
total time to cover 260m = 260/5 = 52min
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