Question 28

IfA : B=2 : 3,B: C=4: 5and C: D=5 : 9,then A : D is equalto

Solution

A : B

B : C

..............................

2 : 3

4 : 5

.............................

8 : 12 : 15 [ ($$ 2 \times 4 = 8 $$) ($$ 3 \times 4 = 12 $$) ($$ 3 \times 5 = 15 $$) ]

5 : 9

.....................................

40 : 60 : 75 : 135 [ ($$ 8 \times 5 = 40 $$) ($$ 12 \times 5 = 60 $$) ($$ 15 \times 5 = 75 $$) ($$ 15 \times 9 = 135 $$)]

== A : B : C : D

8 : 12 : 15 : 27

A : D = 8 : 27

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