Q95
Roorkee express normally reaches its destination at 50 km/h in 30 hours. Find the speed at which it travels to reduce the time by 10 hours?
A.
38 km/h
B.
76 km/h
C.
75 km/h
AnswerD.
60 km/h
Answer: Option C
Solution
Answer: Option C
Solution:
let required speed be S km/h50 × 30 = S × 20
S = 75 km/h