在備考GRE考試的過程中，數(shù)學(xué)部分的題目往往讓考生感到困惑,。今天,，我們將通過一道與銀行存款利息計算相關(guān)的題目來幫助大家提升GRE數(shù)學(xué)能力。

題目：

If the dollar amount of sales at Store P was $800,000 for 2006, what was the dollar amount of sales at that store for 2008?

A. $727,200

B. $792,000

C. $800,000

D. $880,000

E. $968,000

參考答案：B

解析：這道題可以通過簡單的計算得出,。我們可以假設(shè)2007年的銷售額保持不變,，然后考慮2006年的銷售額進(jìn)行了10%的增長和10%的下降。計算如下：800,000 * (1 + 10%) * (1 - 10%) = 792,000,，因此答案是B,。

新題推薦：繼續(xù)關(guān)注我們的每日一題系列，幫助你在GRE數(shù)學(xué)部分取得更好的成績,！

在GRE考試中,，掌握數(shù)學(xué)題目的解題技巧至關(guān)重要。希望通過這道題目的解析,，能夠幫助大家更好地理解銀行存款利息的計算方法,，從而提高自己的數(shù)學(xué)水平。繼續(xù)努力,，祝各位考生順利通過GRE考試,！

Understanding Interest Calculations for the GRE Math Section

The GRE (Graduate Record Examination) is a crucial step for many graduate school applicants, and mastering the quantitative section can significantly enhance your score. One of the key topics you will encounter is interest calculations. This article aims to provide you with insights and strategies to tackle these types of questions effectively. ??

Types of Interest

There are primarily two types of interest you will need to understand:

• Simple Interest: This is calculated using the formula I = PRT, where I is the interest, P is the principal amount, R is the rate of interest per year, and T is the time in years.
• Compound Interest: This is calculated using the formula A = P(1 + r/n)^(nt), where A is the amount of money accumulated after n years, including interest. P is the principal, r is the annual interest rate (decimal), n is the number of times that interest is compounded per year, and t is the time in years. ??

Practice Problems

To help you prepare, let’s go through some example problems:

Example 1: If you invest $1,000 at a simple interest rate of 5% for 3 years, how much interest will you earn?

Solution: Using the formula I = PRT:
I = 1000 * 0.05 * 3 = $150. So, you will earn $150 in interest. ??

Example 2: If you invest $1,000 at a compound interest rate of 4% compounded annually for 5 years, what will be the total amount?

Solution: Using the formula A = P(1 + r/n)^(nt):
A = 1000(1 + 0.04/1)^(1*5) = 1000(1.04)^5 ≈ $1216.65. Therefore, the total amount will be approximately $1216.65. ??

Tips for Success

1. Memorize Formulas: Make sure you are familiar with both simple and compound interest formulas. Flashcards can be helpful for this. ??

2. Work on Practice Questions: Use GRE prep books or online resources to find practice problems. The more you practice, the more comfortable you will become with these concepts. ??

3. Understand the Concepts: Beyond memorization, ensure you understand how and when to apply each formula. This will help you adapt to different question formats you may encounter. ??

Resources for Further Study

Consider using the following resources for additional practice:

• ETS GRE Preparation
• Magoosh GRE Blog
• Khan Academy Algebra

By mastering interest calculations and practicing regularly, you will improve your performance on the GRE math section. Good luck! ??

對于準(zhǔn)備GRE考試的考生來說，掌握一些基本的金融知識是非常有幫助的,，尤其是在涉及到銀行存款利息的計算時,。本文將介紹GRE銀行存款利息公式,，以及如何在考試中靈活運用這些知識。

首先,，我們來看看銀行存款利息的基本公式,。在大多數(shù)情況下，銀行存款利息的計算可以使用以下公式：

Interest = Principal × Rate × Time

其中：

• Principal（本金）：初始存入的金額
• Rate（利率）：年利率,，通常以小數(shù)形式表示,，例如5%則為0.05
• Time（時間）：存款的年數(shù)

例如，如果你存入$1000,，年利率為5%,，存款時間為3年，那么你可以這樣計算利息：

Interest = 1000 × 0.05 × 3 = $150

通過這個例子,，我們可以看到,，理解和應(yīng)用這個公式是相對簡單的。??

在GRE考試中,，可能會遇到與利息相關(guān)的題目,。這些題目通常要求考生計算復(fù)利或簡單利息。在這種情況下,，了解復(fù)利公式也是非常重要的,。復(fù)利的計算公式如下：

A = P(1 + r/n)^(nt)

這里：

• A：最終金額
• P：本金
• r：年利率
• n：每年復(fù)利的次數(shù)
• t：存款年數(shù)

假設(shè)你存入$1000，年利率為5%,，每年復(fù)利一次,，存款時間為3年，那么最終金額的計算如下：

A = 1000(1 + 0.05/1)^(1*3) = 1000(1.05)^3 ≈ $1157.63

從這個計算中,，我們可以看到,，復(fù)利的效果顯著提高了存款的最終收益。??

在GRE考試中,，考生還需要注意單位的轉(zhuǎn)換,。有些題目可能會涉及到不同的時間單位，如月,、季度等,。在這種情況下，確保將時間轉(zhuǎn)換為年是非常重要的,。例如,，如果存款時間為6個月，記得將其轉(zhuǎn)換為0.5年,。??

此外,，考生還應(yīng)該熟悉一些與銀行存款相關(guān)的詞匯，以便在閱讀理解部分更好地理解題目,。以下是一些常見的詞匯：

• Deposit：存款
• Withdrawal：取款
• Interest Rate：利率
• Principal：本金
• Compounding：復(fù)利

在準(zhǔn)備GRE時,，建議考生多做一些與銀行存款利息相關(guān)的練習(xí)題,，以提高自己的計算能力和理解力?？梢詤⒖家恍┰诰€資源或者GRE備考書籍,，尋找相關(guān)的練習(xí)題和解析。??

最后,，保持良好的心態(tài)和穩(wěn)定的復(fù)習(xí)計劃是成功的關(guān)鍵,。盡量在模擬考試中練習(xí)這些數(shù)學(xué)問題，以提高你的解題速度和準(zhǔn)確性,。祝你在GRE考試中取得優(yōu)異的成績,！??