Explanation:
when we get a ratio, it means that the whole is split into the sum of the ratio elements of equally sized parts.
in our case we are dealing with
2 + 25 + 150 = 177
equally sized parts of the whole trip.
the whole trip is 796.5 km.
so, one part is
796.5/177 = 4.5 km
now, the bus segment of the trip gets 2 parts, the ferry segment 25 parts, and the train segment 150 parts.
so, to get the travel distance by train :
150 × 4.5 = 675 km
she traveled 675 km by train.