A gardener is digging a plot of land. As he gets tired, he works more slowly. After ‘t’ minutes he is digging at a rate of 2/\sqrtt square metres per minute. How long will it take him to dig an area of 40 square metres ?

Correct Answer is : 100 minutes

KCET 2014 Math Solved Paper

Question : 17 of 60

Marks: +1, -0

A gardener is digging a plot of land. As he gets tired, he works more slowly. After ‘t’ minutes he is digging at a rate of

√t

square metres per minute. How long will it take him to dig an area of 40 square metres ?

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