Problem-Solving and Data Analysis practice question

Answer: B. $60

25% of 80 is 20, so the price drops to 80 − 20 = 60. Faster: paying 75% of 80 = 0.75 × 80 = 60.

Why the other answers are wrong

A. $55

You subtracted 25 dollars instead of 25 percent. The discount is 0.25 × 80 = $20, so the sale price is $60.

C. $65

$65 would mean a discount of only $15, but 25% of $80 is $20, giving $60.

D. $75

$75 would be a discount of just $5. The 75 comes from 75% — you have to multiply it by 80: 0.75 × 80 = $60.

More Problem-Solving and Data Analysis questions

• Easy–Medium
  A bag contains 3 red, 5 blue, and 2 green marbles. If one marble is drawn at random, what is the probability i…
• Easy–Medium
  A recipe uses 2 cups of flour to make 3 servings. How many cups of flour are needed for 12 servings?
• Easy–Medium
  What is the median of the data set 4, 7, 7, 9, 13?
• Easy–Medium
  The ratio of dogs to cats at a shelter is 5 to 3. If there are 40 dogs, how many cats are there?
• Easy–Medium
  A printer produces 8 pages every 5 seconds. At this rate, how many pages does it produce in 1 minute?
• Medium
  A car travels 150 miles in 2.5 hours. At this rate, how far will it travel in 4 hours?