Math Problem Statement

A un producte que val 12 euros se li aplica un descompte de 8 euros. Una setmana més tard se li torna a fer un descompte del 5% i al cap de un mes de li augmenta el preu un 13%. Ha tornat al preu original? Quin ha estat el percentatge final aplicat?

Solution

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Math Problem Analysis

Mathematical Concepts

Percentage Calculations
Discounts and Markups
Basic Arithmetic

Formulas

Final price after discount: P_final = P_initial - (discount percentage × P_initial)
Final price after markup: P_final = P_initial + (markup percentage × P_initial)
Percentage change formula: Percent change = ((P_final - P_initial) / P_initial) × 100

Theorems

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Suitable Grade Level

Grades 6-8