Problems And Answers PHIMO MOCK 2020 PRIMARY 4

16. A jug filled with water weighs 20 pounds, when 1/2 of the water is poured out, the jug and the re-maining water weigh 14 and 3/4 pounds. How much does the jug weigh?

17. A bullet train travels at a constant speed of 320 kilometers per hour. How far did the bullet train travelled if it left the station at 7:45 AM and reached its destination at 10:15 AM on the same day?

18. The length of a rectangle is thrice its width. If the length is increased by 25% while the width is de-creased by 10%, by what percent is the increase of the area?

19. 15 lamp posts are equally spaced along one side of a straight road. The distance from the 3rd lamp post to the 7th lamp post is 52 meters. What is the distance between the first and the last lamp posts?

20. A number \(ℝ\) greater than 120 but less than 150. It can be divided by 9 evenly. Find the sum of the possible values of \(ℝ\).