Math, asked by lekhaconst1, 6 hours ago

Q9. If a : b = 3 : 4, b : c = 2 : 3, c : d = 1 : 2, find the value of ((a+b+c+d)/(b+d))^½​

Answers

Answered by bagkakali
5

Answer:

a : b=3 :4

b : c=2 : 3=4 : 6

a : b : c =3 : 4 : 6

c d =1 : 2 =6 : 12

a : b : c : d= 3 : 4 : 6 : 12

let a=3k

b=4k

c=6k

d=12k

{(a+b+c+d)/(b+d)}^1/2

={(3k+4k+6k+12k)/(4k+12k)}^1/2

={(25k/16k)}^1/2

=(25/16)^1/2

={(5/4)^2}^1/2

=5/4

=1 1/4

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