If `a/b=1/3,\ b/c=2,\ c/d=1/2,\ d/e=3` and `e/f=1/4` , then what is the value of `(a b c)/(d ef)` ? `1/4` (b) `3/4` (c) `3/8` (d) `(27)/4` (e) `(27)/8`

If (a)/(b)=(c)/(d)=(e)/(f)=(3)/(4) , then what is the value of (3a-4c-e)/(3b-4d-f) ?

If a/b=b/c=c/d=d/e=e/f=1/3, then find the value of ((a+b+c+d+e)/(b+c+d+e+f)) :

If (a)/(b) = (c )/(d ) = (e )/(f) = (3)/(4) , what is the value of (a+c +e )/( b+d +f) ?

If a/b=b/c=c/d=d/e=e/f=1/3 , find the value of ((a+b+c+d+e)/(b+c+d+e+f)):

Six numbers a , b , c , d , e ,f are such that a b=1, b c=1/2, c d=5, d e=2 a n d ef=1/2dot What is the value of (a d : b e : cf)? 4:3: 27 b. 6:1:9 c. 8:9:9 d. 72 :1:9

If A : B = 1 : 2, B : C = 3 : 4 and C : D = 5 : 6, then find the value of D : C : B.

If [(2a+b,a-2b),(5c-d,4c+3d)]=[(4,-3),(11,24)] then the value of a+b-c+2d is (a) 8 (b) 10 (c) 4 (d) -8