firm rdus utut using inuts f lbr L nd ital , with ris W nd R, rstivl. Th firm n frl vr its us f bth L nd nd rts s th mnnr dsribd b mdl f lbr dmnd with tw inputs frm th minimiztin st rstiv. t th urrnt lvl f utut, th mrginl rdut f lbr is 50 nd th mrginl rdut f itl is 100. Th wg rt is 25, nd th rntl rt f itl R is 5. In rdr t minimiz th st f rduing its urrnt lvl f utut, th firm shuld (i) ir mr lbr L nd us mr itl (ii) ir mr lbr L nd us lss itl (iii) ir lss lbr L nd us mr itl (iv) ir lss lbr L nd us lss itl rvid grh. Us -L isqunts nd isst rrsnttin..

1. firm rdus utut using inuts f lbr L nd ital , with ris W nd R, rstivl. Th firm n frl vr its us f bth L
nd nd rts s th mnnr dsribd b mdl f lbr dmnd with tw inputs frm th minimiztin st rstiv. t th urrnt
lvl f utut, th mrginl rdut f lbr is 50 nd th mrginl rdut f itl is 100. Th wg rt is 25, nd th rntl rt f itl R
is 5. In rdr t minimiz th st f rduing its urrnt lvl f utut, th firm shuld
(i) ir mr lbr L nd us mr itl
(ii) ir mr lbr L nd us lss itl
(iii) ir lss lbr L nd us mr itl
(iv) ir lss lbr L nd us lss itl
rvid grh. Us -L isqunts nd isst rrsnttin.