High School

Barako coffee worth 250.00 per kilo is mixed with Arabica coffee worth 150.00 per kilo. How many kilos of each coffee should be used to obtain 40 kg of a mixture worth 253.50 per kilo?

Answer :

Final answer:

To create a 40kg mixture worth $253.50 per kilo, mix 10 kilos of Barako coffee ($250/kg) with 30 kilos of Arabica coffee ($150/kg) by solving the system of equations derived from the cost and weight of each coffee type.

Explanation:

Calculating Mixture Ratios for Coffee Blends

To determine how many kilos of Barako and Arabica coffee should be mixed to obtain 40kg of a mixture worth $253.50 per kilo, we can set up a system of equations based on the cost of each type of coffee and the desired final mixture.

Let x be the kilos of Barako coffee and y be the kilos of Arabica coffee. We have two equations:

  1. x + y = 40 (The total weight of the mixture is 40kg)

  2. 250x + 150y = 40 * 253.50 (The total cost of the mixture is equal to the weight times the cost per kilo)

Solving these equations, we get:

  • The kilos of Barako coffee (x): 10 kg
  • The kilos of Arabica coffee (y): 30 kg

Therefore, to create a 40kg coffee mixture worth $253.50 per kilo, you should mix 10 kilos of Barako coffee with 30 kilos of Arabica coffee.