C-11-Q035mediumsingle_mcqx2=y3=z5\dfrac{x}{2}=\dfrac{y}{3}=\dfrac{z}{5}2x=3y=5z হলে x+y+zz=?\dfrac{x+y+z}{z} = ?zx+y+z=?a222b52\dfrac{5}{2}25c