Question

If m + 4n=2n + 8m; what is the ratio of n to m

Answer 1

Combine like terms to get 2n = 7m

Answer 2

To answer the ratio, massage this equation around to find ' n/m ' .
Let's subtract 'm' from each side:
4n = 2n + 7m
Subtract '2n' from each side:
2n = 7m
Divide each side by 'm' :2 (n/m) = 7
Divide each side by 2 :
n/m = 7/2 . . . . . there's your ratio.  That's choice-'e'.