Question

Ms. Jones wants to create a blend of coffee. one coffee is priced at $8.40 per pound and the other is $7.28 per pound. How many pounds of the $7.28 per pound coffee should she mix with 9 pounds of the $8.40 per pound coffee to sell the mixture for $7.95 per pound? round the answer to the nearest hundredth of a pound.

Answer 1

The possible answers are:
A. 6.04 pounds
B. 4.05 pounds
C. 7.13 pounds
D. 7.00 pounds

Answer 2

Thanks anyway @KirbyLegs

Answer 3

nop

Answer 4

I dont get it

Answer 5

can you explain me please?

Answer 6

8.40*9+7.28x=7.95(9+x)
75.6+7.28x=71.55+7.95x
7.28x-7.95x=71.55-75.60
-.67x=-4.05

x=-4.05/-.67
x=6.045 pounds of $7.28 coffee is used.
Proof:
8.40*9+7.28*6.045=7.95(9+6.045)
75.6+44=7.95*15.045
119.6=119.6

Answer 7

snap, I reversed the variables, look at it and change the variables and solve using this example

Answer 8

it should have been 8.40x and 7.28*9

Answer 9

ok thanks now i get it