Word problems

• How to Find the Area in a Ladder Related-Rates Problem
  For a sliding ladder, model the wall, floor, and ladder as a right triangle, then differentiate its area and the fixed-length constraint.
• How to Solve Calculus Word Problems
  Learn a reliable method for calculus word problems: identify the goal, define variables, model the situation, differentiate or integrate, and check units.
• How Many Games Did the Team Play Overall?
  Assuming every game was a win or loss and the percentages are exact, the team played 15 games initially and 20 games overall.
• How Much Did the Shop Lose in the Stolen-Money Riddle?
  In the classic stolen-money riddle, the shop loses $100 at selling price: $70 in goods and $30 in change, not $200.