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.