Question

Every Day Sally saved a penny, a

dime, and a quarter. What is the least number of days
required for her to save an amount equal to an integral
(counting) number of dollars? (January 11, 2012)

Answer 1

Every day, Sally saves 1 penny, 10 cents, and 25 cents.

In total, she saves 1 + 0.1 + 0.25 = $0.35 every day.

So, in order for her to save an amount equal to an integral number of dollars, we need to find the least number of days it would take for the total savings to be greater than or equal to $1.

To do this, we can divide $1 by $0.35, which will give us the least number of days it would take for Sally to save $1.

1 / 0.35 = 2.857142857142857

The least number of days required for her to save an amount equal to an integral number of dollars is 3.

Sally would need to save for at least 3 days to have an amount equal to an integral number of dollars.

Explanation: