If b/x = 7/4 and b/y =7/ 5, then (y -x) = Choose the correct choice from the following answers
A) b/2 B) b/7 C) 2b D) 3b/7 E) b
Ratio 1:   4b = 7x   Ratio 2:   5b = 7y   y -x = b/7   Answer is b/7
<result>B</result>
If b/x = 7/4 and b/y =7/ 5, then (y -x) =