The speed of train A is 16 km/h less than the speed of train B. To cover a distance of 384 km, B takes 4 hours less time than A. What is the speed (in km/h) of train B?
Answer & explanation
Correct answer: option 4
Let speed of Train B = S km/h
Speed of train A = ( S - 16 ) km/h
Let required distance = 384 km
According to question ,
\(\frac{384}{(S-16)}\) - \(\frac{384}{S}\) = 4
\(\frac{384(S- S + 16)}{S(S-16)}\) = 4
On solving ,
X = 48 km/h
So , Speed of B is 48 km/h