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Ratio and Proportion - General Aptitude

Q1:

Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is:

A 2 : 5

B 3 : 5

C 4 : 5

D 6 : 7

ANS:C - 4 : 5

Let the third number be x.

Then, first number = 120% of x = 120x = 6x
100 5
Second number = 150% of x = 150x = 3x
100 2
Ratio of first two numbers = 6x : 3x = 12x : 15x = 4 : 5.
5 2