Chapter 1, Problem 56A

Interpretation Introduction

Interpretation : The days taken to count a million pennies are to be calculated.

Concept Introduction : The methods for solving numerical problems are arranged into a three-step approach to problem-solving. Analyzing, calculating, and evaluating are the steps in solving a numerical word problem.

Answer to Problem 56A

It takes about $12\text{days}$ to count a million pennies.

Explanation of Solution

It takes one second to count one penny.

It is known that $1\text{million}\text{=}\text{1000000}$ .

To calculate one million pennies, follow the calculation below:

  $\begin{array}{c}\text{days}\text{=}1000000\cancel{\text{pennies}}\times \frac{\text{1}\cancel{\text{sec}}}{\text{1}\cancel{\text{penny}}}\text{×}\frac{1\cancel{\text{min}}}{60\cancel{\text{sec}}}\times \frac{\text{1}\cancel{\text{hr}}}{\text{60}\cancel{\min }}\text{×}\frac{1\text{day}}{24\cancel{\text{hr}}}\\ =11.6\text{days}\end{array}$

It takes about $12\text{days}$ to count a million pennies.