If a: b :: 3 : 7, then what is (5a+6b): (a-3b)?  Pick.
A) -57:2 B) -57:11 C) 11 : 10 D) -11 : 10 E) -1 : 10
a/b= 3/7   Dividing numerator &amp; denominator of ' (5a+6b)/(a-2b) 'by b,   [5(a/b)+6]/[(a/b)-3]= [5*(3/7)+6]/[(3/7)-3]= -57/2   -57:2NSWER:-57:2
<result>A</result>
If a: b :: 3 : 7, then what is (5a+6b): (a-3b)?