SOLUTION: Mr. Gray's weekly salary was increased from $400 per week to $500 per week. What is the percent increase?

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Question 1057988: Mr. Gray's weekly salary was increased from $400 per week to $500 per week. What is the percent increase?
Answer by ikleyn(52824) About Me  (Show Source):
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Mr. Gray's weekly salary was increased from $400 per week to $500 per week. What is the percent increase?
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%28%28500-400%29%2F400%29%2A100 = %28100%2F400%29%2A100 = %281%2F4%29%2A100 = 25%.


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On percentage problems see the lessons in this site
    - Percentage problems
    - Percentage word problems (Type 1 problems, Finding the Part)
    - Percentage word problems (Type 2 problems, Finding the Rate)
    - Percentage word problems (Type 3 problems, Finding the Base)
    - More complicated percentage problems
    - Problems on percentage that lead to unexpected results