Question

Pls answer this question.

Answer 1

Answer:

a:b::c:d

Step-by-step explanation:

1/b + 1/d =2/c (LCM of 1/b and 1/d)

d+b/bd =2/c

d+b = 2bd/c

2b =c(d+b)/d = cd+ cb /d = c + cb/d

Therefore 2b = c + cb/d

Also 2b = a+c (given)

Thus c+cb/d = a+c

cb/d= a

ad= cb

a/b= c/d

Hence a:b::c:d