Question

43. If A:B = 3:4, B: C = 5:7 and C: D = 8:9 then A: D is equal to (A) 3:7 (C) 21:10 (B) 7:3 (D) 10.21​

Answer 1

Answer:

10.21 ,10.21, 10.21, 10.21, 10.21,10.21

10.21

Answer 2

Answer:

D) 10:21

Explanation:

A:D= (A:B)*(B:C)*(C:D)

= (3:4)*(5:7)*(8:9)

=(3*5*8):(4*7*9)

= 10:21