Speed in $$km/hr$$ $$x$$ | $$2$$ | $$4$$ | $$6$$ | $$10$$ | $$12$$ |

Time in hrs $$y$$ | $$60$$ | $$30$$ | $$20$$ | $$12$$ | $$10$$ |

(i) the number of hours he will take if he travels at a speed of $$5km/hr$$

(ii) the speed with which he should travel if he has to cover the distance in $$40$$ hrs.

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