IB Mathematics SL Prep

Category - IB Mathematics

Kenneth receives a 6% commission on all of his real estate sales. Half of his commission goes to his broker. What is Kenneth’s part of the commission on $250,000 in sales?
  1. $6,666
  2. $7,000
  3. $7,100
  4. $7,250
  5. $7,500
Explanation
Answer: E - $7,500.

Considering what Kenneth’s commission is, rather than the entire 6% commission, will make the calculation here easier. Kenneth actually gets 3% commission, after giving the broker his portion. So, our task is to multiply .03 (the decimal for 3%) x $250,000 to get $7,500.

Key Takeaway: Do all simplification that you can prior to doing the calculation. These are little things that can speed you up and give you that tiny edge.
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