$25\times3=75$miles  $75\div (50-25)=3$h  $13+3=16$  They meet at $16:00$.  revise from ($$2017$$ Junior Mathematical Challenge Question \#$$25$$) 
The distance between Exeter and London is $$175$$ miles. Sam left Exeter at $$10:00$$ on Tuesday for London. Morgan left Exeter~ for London at $$13:00$$ the same day. They travelled on the same road. Sam\textquotesingle s average speed was $$25$$ miles per hour, and Morgan\textquotesingle s average speed was $$50$$ miles an hour. At what time did Sam and Morgan meet? 
Options:
(A) $$16:00$$ 
(B) $$15:55$$ 
(C) $$15:30$$ 
(D) $$15:00$$ 
(E) $$14:40$$ 