Afood store makes a 11–pound mixture of peanuts, almonds, and raisins. the cost of peanuts is $1.50 per pound, almonds cost $3.00 per pound, and raisins cost $1.50 per pound. the mixture calls for twice as many peanuts as almonds. the total cost of the mixture is $21.00. how much of each ingredient did the store use?
a. 3lbs peanuts, 6 lbs almonds, 2 lbs raisins
b. 8 lbs peanuts, 1 lb almonds, 2 lbs raisins
c. 6 lbs peanuts, 3 lbs almonds, 2 lbs raisins
d. 8 lbs peanuts, 2 lbs almonds, 1 lbs raisins

Let

x--------> pounds of peanuts

y--------> pounds of almonds

z--------> pounds of raisins

we know that

-----> equation

-----> equation

-----> equation

Substitute the equation in equation and equation

So

-------> equation

-----> equation

Solve the system

-----> equation

-----> equation

Multiply by -2 equation

Adds equation and equation

find the value of y

find the value of x

therefore

the answer is the option

C.6 lbs peanuts, 3 lbs almonds, 2 lbs raisins

option: d is correct

step-by-step explanation:

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation: