Question

Three friends Thomas, Harry and James went for the marathon and start
their run at 6 A.M. and run through planes and hills on their way and
return at 12 P.M. If their speed on the plane ground is 4 km/h, up the hill
it is 3 km/h and down the hill it is 6 km/h. Find the total distance they
cover during the whole journey.
(A) 15 km (B) 10 km
(C) 12 km (D) 18 km
(E) None of these

Answer 1

Answer:

I think correct answer is option E