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Aptitude Day 70


Ratio and Proportion:

1. If a=2b=3c, then a:b:c is:

Solution:
                 Let a=2b=3c = x
                a= x, b= x/2 and c= x/3.

                a:b:c = x : x/2 : x/3
                             1: 1/2: 1/3
                             6:3:2.

2. If a/3 : b/5 : c/7, then a:b:c is:

Solution:
                Let a/3 = b/5 = c/7 = x

                a =3x,  b = 5x and c = 7x.
                3x:5x:7x 

                3:5:7.

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