SSC CGL Official PYQQuantitative Aptitude12 Sep 2025 (Shift 1)
Q.
An express train covers a fixed distance in 40 minutes at an average speed of 200 km/h. Due to construction work, it needs to be diverted, increasing the distance by 25%. If the train needs to arrive at its destination on time (in 40 minutes), what should its new average speed be in km/h?
A
a) 250 km/h
B
b) 260 km/h
C
c) 270 km/h
D
d) 280 km/h
Correct Answer: Option A)
Detailed Step-by-Step Explanation:
Since time is constant (40 minutes), speed is directly proportional to distance. Distance increases by 25%, so speed must increase by 25%. New speed = 200 * 1.25 = 250 km/h.