The cash difference between the selling prices of an book at a profit of 2% and 4% is $3. The ratio of the two selling prices is:	Answers.
A) 55:23	B) 52:33	C) 51:52	D) 45:53	E) 51:34
Let C.P. of the book be $x.   Then, required ratio = 102% of x / 104% of x   = 102/104 = 51/52 = 51:52   51:52
<result>C</result>
The cash difference between the selling prices of an book at a profit of 2% and 4% is $3. The ratio of the two selling prices is: