Question

A person wishes to mix coffee worth ​$9 per lb with coffee worth ​$3 per lb. to get 120 lb. of a mixture worth $5 per lb. How many pounds of the $9 and the ​$3 coffees will be​ needed?

Answer 1

in the given question there are 2 coffee items with different prices one $9 and the other $3
when we add these two it should be equal to 120
so $9 and $3 should be multiplied by some value so that the result will be 120

Answer 2

now multiply some values to 9 and 3 then add both which should be equal to 120

Answer 3

do u have any options

Answer 4

I was doing it this way, 9x +3y=120 to start

Answer 5

yeah correct

Answer 6

input some values to x and y

Answer 7

got it?

Answer 8

first try with same values for x n y

Answer 9

input 10

Answer 10

sorry got kicked off line.

Answer 11

so what is the solution

Answer 12

input 10 in x and y

Answer 13

90+30=120