Question

A store mixes Kenyan coffee worth $10 per kilogram and Turkish coffee worth $13 per kilogram. The mixture is to sell for $12 per kilogram. Find how much of each should be used to make a 492- kilogram mixture.

Answer 1

10x + 13y = 492*12
x + y = 492

Answer 2

so x = 6355/3 and
and y = -4879/3 ?

Answer 3

I get x = 164, y = 228

Answer 4

thank you!