(a)
\From the map ken\\'s house to restaurent in a marina is 10 miles.because
\ken\\'s house to marina is 10 grid squares.
\One grid square represented 1 mile,
\10 grid squares represented = miles.
(b)
\From the map lawana\\'s house to restaurent in a marina is 5 miles.because
\lawana\\'s house to marina is 5 grid squares.
\One grid square represented 5 mile,
\5 grid squares represented = miles.
(c)
\ken traveled 10 miles and lawana traveled 5 miles.
\Therefore, two times is the distance that ken traveled as the distance that lawana traveled.
The solution is (a) 10 miles, (b) 5 miles and (c) 2 times. \ \