Math Problem Statement

Într-o librărie s-au vândut într-o lună 28 346 de caiete de matematică, cu 7 218 mai puține caiete dictando și cu 2 034 mai puține caiete de biologie decât cele de dictando. Câte caiete s-au vândut în total?

Solution

Let's break down the problem step by step:

  1. The bookstore sold 28,346 math notebooks.
  2. They sold 7,218 fewer dictation notebooks than math notebooks.
  3. They sold 2,034 fewer biology notebooks than dictation notebooks.

Step 1: Find the number of dictation notebooks sold

Since there were 7,218 fewer dictation notebooks than math notebooks, we can calculate the number of dictation notebooks as: Dictation notebooks=28,3467,218=21,128\text{Dictation notebooks} = 28,346 - 7,218 = 21,128

Step 2: Find the number of biology notebooks sold

Since there were 2,034 fewer biology notebooks than dictation notebooks, we can calculate the number of biology notebooks as: Biology notebooks=21,1282,034=19,094\text{Biology notebooks} = 21,128 - 2,034 = 19,094

Step 3: Find the total number of notebooks sold

Now, we add up the number of math, dictation, and biology notebooks: Total notebooks=28,346+21,128+19,094=68,568\text{Total notebooks} = 28,346 + 21,128 + 19,094 = 68,568

Final Answer

The total number of notebooks sold is 68,568.

Would you like further clarification on any of the steps?


Related Questions:

  1. How would the total change if there were 1,000 more biology notebooks sold?
  2. What is the percentage of each type of notebook sold out of the total?
  3. How would the total sales be affected if 10% more math notebooks were sold?
  4. If the number of dictation notebooks sold was reduced by half, what would the new total be?
  5. Can we calculate the average number of notebooks sold per type?

Tip:

When solving problems with multiple conditions, break down each part and calculate step by step to avoid confusion.

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Math Problem Analysis

Mathematical Concepts

Basic Arithmetic
Subtraction
Addition

Formulas

Total notebooks = Math notebooks + Dictation notebooks + Biology notebooks

Theorems

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Suitable Grade Level

Grades 5-7