, 2017

The distance between Exeter and London is 175 miles. Sam left Exeter at 10:00 on Tuesday for London. Morgan left London for Exeter at 13:00 the same day. They travelled on the same road. Up to the time when they met, Sam's average speed was 25 miles per hour, and Morgan's average speed was 35 miles an hour. At what time did Sam and Morgan meet?

(A) $17{:}00$ (B) $15{:}55$ (C) $15{:}30$ (D) $15{:}00$ (E) $14{:}40$