Question

Postman Pete has a pedometer to count his steps. The pedometer records up to $99999$ steps, then flips over to $00000$ on the next step. Pete plans to determine his mileage for a year. On January $1$ Pete sets the pedometer to $00000.$ During the year, the pedometer flips from $99999$ to $00000$ forty-four times. On December $31$ the pedometer reads $50000.$ Pete takes $1800$ steps per mile. Which of the following is closest to the number of miles Pete walked during the year?

$2500$

$3000$

$3500$

$4000$

$4500$

Answer: A

Concepts:place value estimation unit conversion

Difficulty rating: 1350

Solution:

Each flip counts $100000$ steps, so the year's steps total $\begin{aligned} &44 \cdot 100000 \\ &\quad {}+ 50000 = 4{,}450{,}000. \end{aligned}$

At $1800$ steps per mile, the mileage is $\dfrac{4{,}450{,}000}{1800} \approx 2472,$ which is closest to $2500.$

Thus, the correct answer is A.

2008 AMC 12B Problem 6

Answer: A

Difficulty rating: 1350

Solution:

Problem 6 in Other Years