RATIOS OF THREE QUANTITIES

Semsas, Kuantan Diagnostic TestNAME : FORM : 2

RATIOS OF THREE QUANTITIES

1. Simplify

a. 16 : 36 : 28 b.

2. Given that S : T = 5 : 3 and T : U = 2 : 7, thus S : T : U =

3. If a: b: c = 2 : 5 : 8, find the value of b and c when a = 4.

4. Farah, Fauzana and Faizal invested in a stall for the School Canteen Day in the ratio

3 : 4 : 5. The total amount invested by Farah and Fauzana together was RM315. How

much did Faizal invest ?

5. Given that p: q: r = 7 : 4 : 6 and p q = 12. Calculate the value of r.

6. C The figure shows a triangle with perimeter 24 cm. Given that AB : BC : AC = 3 : 1 : 2 Calculate the length of AB. A BRATIOS OF TWO QUANTITIES1. Simplify a. 10 : 2.5 b.

2. Given that m : n = 7 : 3 , find

a. m : n + m b. m n : n c. m + n : m - nPROPORTIONS3. If a: b = 3 : 4 , find the value of a if b = 284. It is given that x: y = 5 : 7 and x + y = 48. Find the value of x.

5. The ratio of the number of red marbles to the number of white marbles is 5 : 7. The

total number of marbles is 288. Calculate the difference between the number of white

and red marbles.

6. 1 cm

P Q R S Diagram 1

20 cm In Diagram 1, PQRS is a straight line. Given that PR : RS = 7 : 3.

Find the length of QR, in cm.

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