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Ratio and Proportion

Q1: If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?

A 2 : 5

B 3 : 7

C 5 : 3

D 7 : 3

ANS:C - 5 : 3

Let 40% of A = 2 B
3
Then, 40A = 2B
100 3
2A = 2B
5 3
A = 2 x 5 = 5
B 3 2 3
A : B = 5 : 3.



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