$\backslash$table$[[$Salat$,5160,$ eve$],[$Yariable sapuests,$49$P$..$hat$],[$Contritutims nargia,$4$t$5$rat$],[$Fised expenies,$24,4$ay$],[$Nert operating iniet,$43140,490]]$

Bropulred:

Ansiwet ethit euttion independently basect ont Noe oryphel dets

$4.$ What is We proclucts CM ratio? changh, hoer much mell net eperating ineoves increate? incredoe this year's unt sales by $254.$

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Antila

Aln $19$

$8$ Br $4$