If m, r, x, and y are positive, is the ratio of m to r equal to the ratio of x to y?

(1) The ratio of m to y is equal to the ratio of x to r
(2) The ratio of m + x to r + y is equal to the ratio of x to y






REPHRASE----------- m/r = x/y ? .....my = xr ?

a) m/y = x/r........mr = xy.....Insuff
b)
m+x/r+y = x/y
mx + xy = xy + xr
mx = xr

suff

Ans: B