Question 110
A train $500$ meters long passes at constant speed through a tunnel $3$ kilometers long. The time from the last carriage entering the tunnel until the locomotive emerges at the other end is $50$ seconds. The train's speed is:
(A) $50\ \mathrm{km/h}$
(B) $216\ \mathrm{km/h}$
(C) $252\ \mathrm{km/h}$
(D) $300\ \mathrm{km/h}$
(E) None of the above.
(A) $50\ \mathrm{km/h}$
(B) $216\ \mathrm{km/h}$
(C) $252\ \mathrm{km/h}$
(D) $300\ \mathrm{km/h}$
(E) None of the above.