29.2k views
5 votes
Sam is saving quarters. She saves 1 quarter the first day, 2 quarters the second day, 3 quarters the third day, and so on for 29 days. How much money will she have saved in 29 days?

2 Answers

2 votes
In total she saved in 29 days $ 108.75
User NightWatcher
by
7.5k points
3 votes

Final answer:

After 29 days, Sam will have saved $108.75. This is calculated by finding the sum of an arithmetic series, which represents the total number of quarters she saved, and then converting that sum into dollars.

Step-by-step explanation:

The question is asking for the total amount of money Sam will have saved after 29 days if she saves an increasing number of quarters each day, starting with 1 quarter on the first day and adding one more quarter each subsequent day. This is a problem related to arithmetic series in mathematics where we need to find the sum of a sequence of numbers.

To solve this, we can use the formula for the sum of the first n natural numbers:

S = n(n + 1) / 2,

where S is the sum and n is the total number of terms.

In Sam's case, n is 29 days. Plugging this into the formula:

S = 29(29 + 1) / 2 = 29(30) / 2 = 435 quarters in total.

Since four quarters make a dollar, we divide the total number of quarters by 4 to find out how many dollars Sam saved:

$108.75 (435 ÷ 4 = 108.75).

Therefore, after 29 days, Sam will have saved $108.75.

User Karly
by
7.6k points