Ratio and Proportion Practice Test 5

Question : 11 of 25

Marks: +1, -0

If A : B = 4 : 7, B : C = 7 : 9 and C : D = 9 : 11, then A : D is equal to:

Solution:

A/B=4/7,B/C=7/a,C/D=9/11

∴A/D=A/B×B/C×C/D

A/D=4/7×7/9×9/11=4/11

So, A : D = 4 : 11

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