Question

Fuji apples cost $3.00 per pound, and Golden Delicious apples cost $2.00 per pound. A childcare center purchases 30 pounds of a combination of the two types of apples for a total of $80.

Answer 1

We can form simultaneous equations from this.

Let the total number of fuji apples be x and that of delicious apple be y.

Now The total cost of the apples will be :

3x + 2y = 80

The total apples will be :

x + y = 30

Solving the two simultaneously we have :

x = 30 - y

substituting in the first equation we have :

3(30 - y ) + 2y = 80

90 - 3y + 2y = 80

-y = -10

y = 10

x = 30 - 10 = 20

We have :

20 Fuji apples and 10 Delicious apples.