Elsa's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Elsa $5.70 per pound, and type B coffee costs $4.30 per pound. This month's blend used twice as many pounds of type B coffee as type A, for a total cost of $300.30. How many pounds of type A coffee were used?

21 pounds of type A coffee were used.

Step-by-step explanation:

Let x represent the number of pounds of type A coffee that were used in the blend.

Let y represent the number of pounds of type B coffee that were used in the blend.

Type A coffee costs Elsa $5.70 per pound, and type B coffee costs $4.30 per pound. The mixture sold for a total cost of $300.30. It means that

5.7x + 4.3y = 300.3- - - - - - - - - - -1

This month's blend used twice as many pounds of type B coffee as type A. It means that

y = 2x

Substituting y = 2x into equation 1, it becomes

5.7x + 4.3 × 2x = 300.3

5.7x + 8.6x = 300.3

14.3x = 300.3

x = 300.3/14.3

x = 21

69

step-by-step explanation:

step-by-step explanation:

two pairs of adjacent sides are of equal length. this implies that one diagonal divides the kite into congruent triangles, and so the angles between the two pairs of equal sides are equal in measure. it also implies that the diagonals are perpendicular.