Question

Seventy-five percent of the apple pies were sold on Tuesday, and the remainder were thrown out. If 12 apple ples were sold Tuesday, then how many were thrown out?​

Answer 1

Let "a" represent total apple pies.

Note that:

• 75% x a = 12 apples pies

Simplify the LHS:

• 75a/100 = 12 apple pies

Use cross multiplication:

• 75a = 12 x 100
• => 75a = 1200

Divide 75 both sides:

• => 75a/75 = 1200/75
• => a = 16

If there were 16 apples and 12 were sold, 4 apple pies were thrown out.

Answer 2

4 pies

Explanation:

Hello!

We know that 12 apple pies are 75 percent of the total apple pies.

Let x = # of pies total.

This means that 75% of x, or 0.75x is 12

Solve:

• 75% of x = 12
• 0.75x = 12
• x = 16

Now, 16 is the total number of pies. To find the number thrown out, we subtract 12.

16 - 12 = 4

4 pies were thrown out