Math Problem Statement

Las rebajas de unos grandes almacenes suponen  la aplicación del 20% de descuento durante la primera  quincena. Pasado este período de tiempo,  se aplica el 25% añadido al descuento anterior.  ¿Cuánto cuesta finalmente un artículo que inicialmente  costaba 128€? ¿Qué porcentaje total de descuento  se ha aplicado?

Solution

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Math Problem Analysis

Mathematical Concepts

Percentages
Sequential Discounts
Basic Arithmetic

Formulas

First Discount = Initial Price × 0.20
Price After First Discount = Initial Price - First Discount
Second Discount = Price After First Discount × 0.25
Final Price = Price After First Discount - Second Discount
Total Discount Percentage = (Initial Price - Final Price) / Initial Price × 100

Theorems

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Suitable Grade Level

Grades 6-8