**Question:**

If x:y=7:3 then find the value of xy+y^2/x^2-y^2 a. 7/3 b. 4/3 c.3/4 d.3/7

Shashikant is right

let x=7K, y=3K then,

xy +y^2/x^2-y^2 =21K^2+9K^2 /49K^2-9K^2

=30K^2/40K^2

=3/4

option c is correct

Yes akhilesh this iz the only way the above que can be solevd..__good__

x:y=7:3 x=7 ,y=3

xy+y^2/x^2-y^2

=7×3+9/49-9

=21+9/49-9

=12+9/49

=597/49

³/⁴

C is right ans bro ...

Plz try again

Your options have no answer.

__C__