Question

a:b=2:3, b:c=4:3, c:d=2:5then a:d=?​

Answer 1

Step-by-step explanation:

A:B = 2 : 3

B:C = 4 : 5

C:D = 6 : 7

A is the product of all terms appearing under column (1).

A = 2 x 4 x 6 = 48

B is the product of all terms under column (1) beginning from second row and term under column (2) for all previous rows.

B = 4 x 6 x 3 = 72

C is the product of all terms under column (1) beginning from third row and terms under column (2) for all previous rows.

C = 6 x 3 x 5 = 90

D is the product of all terms appearing under column (2).

D = 3 x 5 x 7 = 105

=> A:B:C:D = 48:72:90:105