1.

If the petrol burnt in driving a motor boat varies as the cube of the velocity , then the speed (in km/hour) of the boat going against a water floe of C kms/hour so thatthe quantity of petro burnt is minimum is

Answer»

`(2C)/(3)`
`(3C)/(2)`
`(4C)/(3)`
`(3C)/(4)`

Answer :B


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