• Questions 30 and 31 are based on the following information:
  A driver expected to drive his vehicle along an expressway a distance of 150 km at the uniform speed of 90 km h^-1. Although he was driving accordingly, he had to drive a distance of 15 km on the way at the uniform speed of 75 km h^-1 due to bad road conditions.

What was the time duration in minutes that the driver expected to spend on his journey?