Math Problem Statement

Solve

Zoe, Maria, and Dima split the money in a ratio of 2:5:8. It turned out that the total amount of money Maria and Dima have is $26 less than the total amount that was divided. How much money does Maria have?

Solution

Let's solve the problem step by step:

Information Given:

  1. Ratio of money split: Zoe : Maria : Dima = 2:5:82 : 5 : 8.
  2. Let the total amount of money divided be xx.
  3. The amounts received by Zoe, Maria, and Dima are proportional to the ratio, so:
    • Zoe receives 215x\frac{2}{15}x,
    • Maria receives 515x=13x\frac{5}{15}x = \frac{1}{3}x,
    • Dima receives 815x\frac{8}{15}x.
  4. The total of Maria's and Dima's money is given as $26 less than the total amount divided, i.e.: Maria’s money + Dima’s money=x26\text{Maria's money + Dima's money} = x - 26

Step 1: Express Maria's and Dima's money

Maria's share: Maria’s money=515x=13x\text{Maria's money} = \frac{5}{15}x = \frac{1}{3}x Dima's share: Dima’s money=815x\text{Dima's money} = \frac{8}{15}x The sum of Maria's and Dima's money is: Maria + Dima=13x+815x\text{Maria + Dima} = \frac{1}{3}x + \frac{8}{15}x

Step 2: Combine terms with a common denominator

The least common denominator of 33 and 1515 is 1515. Rewrite the terms: 13x=515x\frac{1}{3}x = \frac{5}{15}x So: 13x+815x=515x+815x=1315x\frac{1}{3}x + \frac{8}{15}x = \frac{5}{15}x + \frac{8}{15}x = \frac{13}{15}x

Step 3: Set up the equation

It is given that: 1315x=x26\frac{13}{15}x = x - 26

Step 4: Solve for xx

Rearrange the equation: x1315x=26x - \frac{13}{15}x = 26 Factor out xx: (11315)x=26\left( 1 - \frac{13}{15} \right)x = 26 Simplify: 15151315=215\frac{15}{15} - \frac{13}{15} = \frac{2}{15} So: 215x=26\frac{2}{15}x = 26

Solve for xx: x=26×152x = 26 \times \frac{15}{2} x=390x = 390

Step 5: Find Maria's share

Maria's share is: Maria’s money=13x=13(390)=130\text{Maria's money} = \frac{1}{3}x = \frac{1}{3}(390) = 130

Final Answer:

Maria has $130.


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Related Questions:

  1. What is the total amount of money Dima received?
  2. How much more money did Dima receive compared to Zoe?
  3. If the total money was increased by 10%, how much would Maria get?
  4. What percentage of the total money did Maria receive?
  5. What is the difference in amounts received by Maria and Zoe?

Tip:

When solving ratio problems, always express amounts in terms of a single variable to simplify the calculations.

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Math Problem Analysis

Mathematical Concepts

Ratios
Proportions
Linear Equations

Formulas

Amount share = (ratio part / total ratio) * total amount
Equation: Total amount - Sum of shares = 26

Theorems

Basic Ratio and Proportion Theorem
Linear Equation Solving

Suitable Grade Level

Grades 6-8