X varies directly as the product of u and v and inversely as their sum if x=3 when u=3 and v=1 what is the value of x if u=3 and v=3?

Kizzkenny

6 years ago

x¤uv/(u+v)
x=kuv/(u+v)
kuv=x(u+v)
k=x(u+v)/uv
x=3,u=3,v=1
k=3(3+1)/3*1
k=3*4/3
k=4
connecting equation;
x=4uv/(u+v)
when u=3,v=3,x=?
x=(4*3*3)/3+3
x=36/6
x=6