SSC CGL 2023 PYQ — Question 59

The correct answer is option 4 i.e. 74$\frac{11}{12}$.

Given that

A part of a journey is covered in 37.5 minutes at 90 km/h,

The remaining part in 14 minutes at 80 km/h

Formula used

Distance = Speed × Time 

Let x part of the journey be covered in 37.5 minutes 

The distance(x) = 90 × 37.5/60 = 56.25 km

The remaining distance = 80 × 14/60 = 18.67 km

Hence, the total distance = 56.25 + 18.67 = 74.92 km i.e. 74$\frac{11}{12}$ km