Question

A boy standing on the shore of a lake 1 mile wide wants to reach the “Golden Arches” 3 miles down the shore on the opposite of the lake. If he swims at 2 mph and walks at 4 mph, is it quicker for him to swim directly across the lake and then walk to the Golden Arches or to swim directly to the Golden Arches? To the nearest minute, how much quicker?

Answer 1

it is a matter of time

the speed is constant

use v=d/t

to find t and comparing it

Explanation:

and in the 2nd case assume a cannel directly conects the land that boy stands on and the golden arches with the same distances

and note that the units are the same