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A student wins a competition and receives a cash prize of $800. If he donates 10

Practice Questions

Q1
A student wins a competition and receives a cash prize of $800. If he donates 10% of it to charity, how much does he keep?
  1. $720
  2. $740
  3. $760
  4. $780

Questions & Step-by-Step Solutions

A student wins a competition and receives a cash prize of $800. If he donates 10% of it to charity, how much does he keep?
  • Step 1: Identify the total cash prize the student won, which is $800.
  • Step 2: Calculate 10% of the cash prize to find out how much he donates. To do this, multiply $800 by 0.10.
  • Step 3: Perform the multiplication: $800 * 0.10 = $80. This is the amount he donates to charity.
  • Step 4: Subtract the donation amount from the total cash prize to find out how much he keeps. So, $800 - $80 = $720.
  • Step 5: The final amount the student keeps is $720.
  • Percentage Calculation – Understanding how to calculate a percentage of a given amount.
  • Subtraction – Performing subtraction to find the remaining amount after a donation.
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