Solve plzzzz

ITS DAMMN SIMPLE 

1ST PROBLEM PUT K =A/4

THRE4 A=4K 

AND SO ON B=5K

C = 9K

(A+B+C)/C= (4K+5K+9K)/9K

Ttarget='_blank' rel='nofollow' hrefORE 18K/9K =2

SIMILARLY SECOND SUM IS TO BE SOLVED

THIRD SUM 

A & B ARE ANY TWO NUMBERS IN THE RATIO 4:1 I WILL ASSUME THAT 4 AND 1 ARE THHE TWO NUMBERS I.E A = 4 AND B=1 A/B = 4/1 AND B/A =1/4

Ttarget='_blank' rel='nofollow' hrefORE SQRT OF A/B IS 2/1 AND SQRT OF B/A IS 1/2

ADDING BOTH OF THESE 2+1/2

=4/2+1/2

=5/2

ANS 5/2

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