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Percentage - General Aptitude

Q1:

Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B.

A 2 : 3

B 1 : 1

C 3 : 4

D 4 : 3

ANS:D - 4 : 3

5% of A + 4% of B = 2  (6% of A + 8% of B)
3
5  A + 4  B = 2 6  A + 8  B
100 100 3 100 100
1  A + 1  B = 1  A + 4  B
20 25 25 75
1 - 1  A =  4 - 1  B
20 25 75 25
1  A = 1  B
100 75
A = 100 = 4 .
B 75 3
 Required ratio = 4 : 3