If the ratio of x to y is 1 to 5, then (y-x)/(x+y)?
Choose the most appropriate option:
A) -7/3 B) -3/7 C) 2/3 D) 1 E) 2/6
I believe this problem can be solved using algebra.   The ratio of x to y is 1 to 5 means   (x/y)=(1/5)   Cross-multiply   1x = 5y   x = (1/5)*y   Then, substitute x in the original equation in the problem with the value we just found.   (y - (1/5)*y) / ((1/5)*y + y)   = ((4/5)*y) / ((6/5)*y)   Simplify by canceling the y in the numerator with the y in the denominator.   (4/5) / (6/5)   = (4/5) * (6/7)   The 5s cancel each other out, and you are left with 4/6 to 2/3.
<result>C</result>
If the ratio of x to y is 1 to 5, then (y-x)/(x+y)?