Question

Alternativas

A)1 500

B)1 400

C)1 300

D)1 200

É)1 100

Answer 1

x*80+y*50=140000  (i)

80*x*0,3 +50y*0,4=52000

24x+20y=52000 ==>y=(52000-24x)/20 (ii)

(ii)  em (i)

x*80+((52000-24x)/20) *50=140000

x = 500

500*80+y*50=140000  ==>y=2000

| x-y| = |500-2000| = 1500

Letra A