• 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?

• Questions 28 and 29 are based on the following information.
  When four kids, Anura, Bhanu, Cassim and David were playing with a rubber ball in the front garden of a house, one kid carelessly threw the ball; and a glass window of the house was broken. The following is what each kid had to tell about who broke the window.
  ∗ Anura : Bhanu is the one who broke it.
  ∗ Bhanu : Anura is lying.
  ∗ Cassim : Anura is the one who broke it.
  ∗ David : I am not the one who broke it.

If only one of the kids is telling the truth, who broke the glass window?

• Questions 26 and 27 are based on the following graph that shows the import and export data of Sri Lanka during 2014 – 2018.

In how many years during the period from 2014 to 2018, were the imports more than 150% of the exports in value?

A factory gets an urgent order to manufacture a certain item. It has three machines A, B and C capable of producing the particular item. The machine A can complete the entire order in 4 hours and the machines B and C can do the same in 5 and 6 hours respectively. The factory manager decides to utilize all three machines to get the order completed and he starts all three machines at the same time. Exactly after 1 hour, the machine B breaks down and stops working. How much longer will the other two machines take to complete the work?

Five Students took a test in which the pass mark was 20. They all passed the test and the sum of the marks scored by them was 105. If the highest mark was scored by two students, what could have been the highest mark?