Problem of the Week - Upper Elementary - Sept. 6 to Sept. 12, 2020

Upper Elementary:

Question: Katie is comparing the prices of 4 different pies. A cherry pie costs $6.00. A chocolate cream pie costs $11.00. A blueberry pie costs $7.00. A peach pie costs the average price of all 4 of the pies. How much does the peach pie cost? 

Answer:  $8.00

Solution:  If the average of all 4 pies is the same as the price of the peach pie, then the average of the first 3 pies must be equal to the price of the peach pie. To find the average price of the pies, we add the prices of the first 3 pies together, then divide by 3.

$6.00 + $11.00 + $7.00 = $24.00

$24.00 ÷ 3 = $8.00