If two positive numbers are in the ratio 1/7 : 1/4, then by what percent is the second number more than the first? Choose the correct choice from the following choices
A) 67%. B) 70%. C) 75%. D) 68%. E) 80%.
Given ratio = 1/7 : 1/4 = 4 : 7   Let first number be 4x and the second number be 7x.   The second number is more than first number by 3x.   Required percentage = 3x/4x * 100 = 75%.   Answer: 75%.3 /4  * 100= 
<gadget id="calculator">3 /4  * 100</gadget>
<output>75</output>
75%.   Answer: 75%.
<result>C</result>
If two positive numbers are in the ratio 1/7 : 1/4, then by what percent is the second number more than the first?