If m/m+n =5/7, what is the value of 3n/m?
( show me the steps to getting the answer) youu!

a. 10/7
b. 6/5
c. 1/2
d. 15/2

If m/ (m + n) = 5/7, then
m = 5 and n = 2.

3n/m = (3*2)/5 = 6/5

LETTER B

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm