If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number.  Choose the correct choice from the following
A) 5 : 3 B) 2 : 5 C) 4 : 7 D) 5 : 2 E) None of these
Explanation:   Let the first number is A and second number is B.   5 : 3s per question   (40/100)5 : 3 = (2/3)B   5 : 3/B = 2/3 x 100/40   5 : 3/B = 5/3   =&gt;5 : 3:B = 5:3   5 : 3nswer: Option 5 : 3
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If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number.