TOPIC: Percentage, Interpolation, Prorate, inch/feet, etc.
Percentage Calculations Can Get Very Tricky.  
We have spreadsheets that can help.  Now you can answer any of the below questions in seconds.
 
Percentage Questions Answered in Seconds:
     * What is 25% of $5,000?
     * Change from 250 to 100 is a decrease of what percentage? 
     * Adding 15% to 12,345 is?
     * Subtracting 25% from 145,678 is?
     * 12,345 is 10% of what number?
     * $25 with 40% markup is?
     * From $40 to $75 is a markup of what percentage?
 G1 - Math.xlsx
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Click to Download FREE G1 Math.xlsx
HVAC / ENGINEERING 
   * Abbreviations
   * Units Conversions
   * Ductwork Cost Estimate
   * Piping Cost Estimate
   * Water Volume Inside Piping
   * Piping Friction Loss Estimate 
   * Formulas / Tables
 
ENERGY CONSERVATION
   * Energy Unit Conversion
   * Motor Energy Consumption
   * Lighting Power Consumption
   * Heating Cost
   * LCC - Lighting Upgrade
   * LCC - Equipment Upgrade
 
FINANCE
   * Life Cycle Cost Analysis
   * Financial Cost Benefit Analysis
   * Net Present Value
   * Simple Payback
   * Payback Analysis
 
BUSINESS
   * Business Cashflow Analysis
   * Contacts (Searchable)
   * Cost Estimate
   * Invoices
   * Employee Time off Calendar
   * Expense Slips
   * Percentages
TOPICS