Question

Walnuts cost $10 per pound and peanuts cost $5 per pound. How many pounds of peanuts would be needed for a 40 pound mixture that sells for $7.75 per pound?

How would I set this up in a system of equations again??

Answer 1

This is what I think it is-

10x+5y=7.75
x+y=7.75

Answer 2

x + y = 40

I think..

Answer 3

Okay I wasn't so sure if it was that or x+y=40. Thx I"ll try it out to see if I get an answer from my choices :)

Answer 4

Their mixture is 40:

So:

x + y = 40

10x + 5y = 7.75

It is better to divide second equation by 5 first:

2x + y = 1.55

Now you have to just subtract them..

Answer 5

Tyvm :) I got y=18 and x=22

Answer 6

y=peanuts ; x=walnuts

Answer 7

Welcome dear..