Question

A grocer wants to make a 10-pound mixture of peanuts and cashews that he can sell for $4.75 per pound. If peanuts cost $4.00 per pound and cashews cost $6.50 per pound, how many pounds of cashews should he use?

3
4
6
7

Answer 1

do u know how to do this

Answer 2

Let C and P be the pounds of each in the mix

6.50 C + 4.00P = 47.50 (dollars)
C + P = 10 (pounds)

You do the solving. Try substituting 100 - C for P in the first equation, and then solve for C.
Use back substitution.

Answer 3

@johhjohn Can you do it?

Answer 4

im tryin

Answer 5

More hints :)
6.5 c + 4 ( 10 - c) = 47.5

Answer 6

Does it help?

Answer 7

my bad, 10-c not 100-c, type-o

Answer 8

more 2.5c=7.5
=c=3

Answer 9

its cool an thats the part that rly messed me up

Answer 10

Yep, 3 lbs of cashew

Answer 11

thax

Answer 12

Can you find the pounds of peanut ?

Answer 13

Hint: Total mixed pounds is 10 lbs :)

Answer 14

Even it's not in the question but you should know for your own good!

Answer 15

ya 7 right

Answer 16

The essential concept here is to construct the equation:
6.5 c + 4 ( 10 - c) = 47.5

Answer 17

wat u mean

Answer 18

The calculation part just a trivial step after you write down the equation!

Answer 19

ook