Question

George sold 18, 22, 26, 12, 25, 20, and 19 cars per month over the past seven months. He followed the steps below to

determine the number of cars he needs to sell in the next month to have a mean number of sales per month of 24
Step 1: Find the total cars needed to have a mean of 24: 24 x 7 = 168
Step 2. Find the total cars sold: 18+22+26+ 12+25+20+ 19 = 142
Step 3: Subtract the total cars sold from the total cars needed: 168 - 142 = 26
Step 4: State the answer: George needs to sell 26 cars next month.
Where did George make his first mistake?

Answer 1

Step 1

Explanation:

on edg

Answer 2

George made the first mistake by multiplying by 7 instead of 8

Explanation:

The total cars needed to have a mean of 24:

24 x 8 = 192

Total cars sold during the seven months:

18 + 22 + 26 + 12 + 25 + 20 + 19 = 142

Subtract the total cars sold from the total cars needed:

192 - 142 = 50

George needs to sell 50 cars in the eight month in order to have an average of 24 cars sold per month.