Question 1015346
K+R+N=37000

K=R-9000

N=(2/3)R

Since we know K and N in terms of R, substitute -

(R-9000)+R+((2/3)R) = 37000


Let's multiply both sides by 3 -

3R-27000+3R+2R= 111,000

8R-27000=111,000

8R=138,000

R= $17,250

K= $8,250

N= $11,500

(Check to see it adds to the sum you stated and the other 2 equations work. This is how you catch a mistake)