Ratios, Rates and Proportions

Question 11: Diagram below shows two baskets of eggs. (a) State the ratio of the number of chicken eggs to the number of duck eggs. (b) A number of eggs need to be added into each basket so that the ratio in (a) remain unchanged. Find the minimum number of eggs to be added in … Read more

Question 8: Liza received three types of coloured marbles, red, green and yellow in the ratio of 2 : 5 : x. Given that the number of yellow marbles are more than the number of red marbles but less than the number of green marbles. Calculate the number of yellow marbles that Liza received if … Read more

Question 5: In diagram below, ABC is a triangle. The sides of the triangle are in the ratio AB : BC: CA = 4 : 7 : 6. Find the difference in length, in cm, between AB and CA. Solution: AB:BC:CA=4:7:6 BC=35cm AB BC = 4 7 AB 35 = 4 7 AB= 4 7 … Read more

4.2.1 Ratio, Rates and Proportions, PT3 Focus Practice Question 1: Given x : y = 4 : 5 and x + y = 180. Find the value of x. Solution: Given x:y=4:5 and x+y=180 x x+y = 4 4+5 x 180 = 4 9 ∴x= 4 9 ×180  =80   Question 2: Given x : y = 9 … Read more