Math Problem Statement

Suppose a stock drops in value by 40% one week, then increases in value the next week by 75%. Is the value higher or lower than where it started? The value of the stock is than where it started. If the value of the stock started at $100, then what is it worth now?

Solution

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Math Problem Analysis

Mathematical Concepts

Percentage Decrease
Percentage Increase
Successive Percentage Change

Formulas

Decrease by percentage: New Value = Initial Value - (Percentage × Initial Value)
Increase by percentage: New Value = Initial Value + (Percentage × Initial Value)

Theorems

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Suitable Grade Level

Grades 6-8