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Fundraising During a recent month, students contributed money at school for the benefit of flood victims in another part of the country. One enterprising student, Matt, asked his aunt to donate money on his behalf. She agreed that on each day that Matt contributed, she would match his donation plus donate 10 cents more. There were 21 school days during the month in question. From the second school day on, Matt donated 3 cents more than he gave on the previous school day. In total, Matt and his aunt contributed \(\$ 17.22\) (a) How much money did Matt contribute on the first school day of the month in question? (b) What was Matt's total contribution for that month? (c) How much did Matt's aunt donate on his behalf?

Short Answer

Expert verified
This problem is solved using the arithmetic progression formula. The initial contribution from Matt is calculated first with the formula \(17.22 = 21/2 [2*a + (21 - 1)*0.03]\). Then, Matt's total contribution across the month is acquired by substituting the value of a into the same formula. Finally, Matt's aunt's total contribution can be calculated by subtracting Matt's total from $17.22.

Step by step solution

01

Determine Matt's daily increase

Considering that Matt adds 3 cents daily to his donation, it becomes an arithmetic progression. We know that the arithmetic progression formula is \(S = n/2 [2*a + (n - 1)*d]\), where S stands for the sum of the arithmetic progression, n indicates the number of terms, a represents the first term, and d signifies the difference between two consecutive terms. Hence, solve the equation \(17.22 = 21/2 [2*a + (21 - 1)*0.03]\) for a, which corresponds to Matt's donation on the first day.
02

Calculate Matt's total contribution

Plug Matt's donation on the first day into the arithmetic progression formula to calculate his total contribution for the month. Use the same formula \(S = n/2 [2*a + (n - 1)*d]\) with the difference, d, being 3 cents.
03

Deduct Matt’s total contribution from the total amount

To find Matt's aunt's total contribution, subtract Matt's total amount from the total of 17.22. The value you obtain will be the amount that Matt's aunt contributed.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Fundraising Problem
Fundraising activities can bring communities together and support important causes. In our exercise, a group of students fundraises to aid flood victims, showing the power of collective action. Matt, one of these students, adds a creative twist by involving his aunt, who agrees to match and exceed his donations each day.

This scenario is not only about raising money but also about collaboration and generosity. Matt's fundraising strategy outlines a common approach where an individual's contribution is boosted by additional supporters. His aunt's willingness to add extra to each matched donation further illustrates how generosity can multiply fundraising efforts' overall impact.

Moreover, the problem helps illustrate how small, incremental donations can add up over time, becoming significant. Such strategies can be seen in various community fundraising initiatives supporting charities, schools, and other essential causes. Each small effort contributes to a larger outcome, demonstrating the importance of participation and joined efforts in fundraising campaigns.
Donation Matching
Donation matching is an effective fundraising strategy where a supporter agrees to match the donations made by others. In this scenario, Matt's aunt has promised to match his daily contributions with an additional 10 cents more.

Her strategy ensures that Matt's efforts are amplified, resulting in more funds towards the cause. Matching donations can incentivize individuals to donate with the knowledge that their contribution will effectively be doubled. This approach can lead to a significant increase in fundraising totals and encourages more people to participate.

Companies and individuals often use donation matching in larger fundraising campaigns to further motivation and participation. Its effectiveness lies in maximizing each donation's value, driving higher engagement and contribution levels. In Matt's case, his aunt's generous matching is a powerful way to leverage support for the flood victims beyond what Matt alone could contribute.
Mathematical Sequences
Mathematical sequences, specifically arithmetic progression in this context, are essential in solving fundraising problems like the one presented with Matt's contributions. An arithmetic progression is a sequence of numbers where each term after the first is obtained by adding a constant difference to the preceding term.

In our exercise, Matt's contributions increase by a consistent 3 cents each school day, forming an arithmetic progression. This mathematical concept helps determine the total amount of his donations over the month, giving a clear, structured way to calculate cumulative contributions.

To find the total amount contributed, the formula for the sum of an arithmetic progression is utilized:\[S = \frac{n}{2} [2a + (n - 1)d]\]Here, \(S\) is the total sum of donations, \(n\) is the number of terms, \(a\) is the first term, and \(d\) is the daily increase.

Understanding this financial scenario through the lens of mathematical sequences provides clarity in complex situations and confirms calculations are accurate, ensuring a better understanding of cumulative growth over time.

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