If 7a = 8b and ab ≠0, what is the ratio of a/8 to b/7?  Pick one:
A) 16/14  B) 8/7  C) 1  D) 7/8  E) 64/49
A nice fast approach is the first find a pair of numbers that satisfy the given equation: 7a = 8b   Here's one pair: a =8 and b =7   What is the ratio of a/8 to b/7?   In other words, what is the value of (a/8)/(b/7)?   Plug in values to get: (a/8)/(b/7) = (8/8)/(7/7)= 
<gadget id="calculator">(8/8)/(7/7)</gadget>
<output>1</output>
1/1= 
<gadget id="calculator">1/1</gadget>
<output>1</output>
1   1
<result>C</result>
If 7a = 8b and ab ≠0, what is the ratio of a/8 to b/7?