How much cashews at $1.58 per pound must be mixed with walnuts that cost 78 cents per pound to make a mixture of 40 pounds of nuts that cost $1.50 per pound?

Respuesta :

Answer:

Cashew= 36 pounds

Walnut= 4 pounds

Step-by-step explanation:

Given: Cost of Cashew= $1.58 per pound

           Cost of walnut= $0.78 per pound

           Total weight of mixture= 40 Pound

           Cost of mixture= $1.50 per pound.

Lets assume the amount of cashew added in the mixture be "x".

∴ Amount of Walnut in the mixture will be [tex](40-x)[/tex]

Now, forming an equation to total cost and weight of mixture.

⇒ [tex]1.58\times x+0.78 \times (40-x)= 40\times 1.50[/tex]

Using distributive property of multiplication

⇒ [tex]1.58x+31.2-0.78x= 60[/tex]

⇒[tex]0.8x+31.2= 60[/tex]

Subtracting both side by 31.2

⇒[tex]0.8x= 60-31.2[/tex]

⇒[tex]0.8x= 28.8[/tex]

Dividing both side by 0.8

⇒[tex]x= \frac{28.8}{0.8}[/tex]

∴ [tex]x= 36\ pounds[/tex]

Hence, Amount of cashew added in the mixture of nuts is 36 pounds.

Next finding the amount of walnut added in the mixture.

subtituting the value of x

Amount of walnut in the mixture= [tex](40-x)[/tex]

⇒ Amount of walnut in the mixture= [tex](40-36)= 4\ pounds[/tex]

Hence, 4 pounds of walnut added in the mixture.

Answer:

36

Step-by-step explanation: