Question 1122144
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x + (x+25) + 2*(x+25) = 345   (where x = the distance from Blackwood to Trenton)


4x + 75 = 345


4x = 345 - 75 = 260  ====>  x = 260/4 = 65


<U>Answer</U>.  The distance under the question is  2*(x+25) = 2*(65+25) = 180 miles.
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Internet (https://www.distancefromto.net/distance-from-new-york-to-boston-us)  gives 190 miles.