Multiple choice

The average weight of a sample of 10 apples is 52 g. Later, it is found that the weighing machine has shown the weight of each apple 10 g less. The correct average weight of an apple is

  1. 62 g

  2. 42 g

  3. 50 g

  4. 52 g
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If the machine showed 10g less for each of the 10 apples, the total weight was underestimated by 10 * 10 = 100g. The correct total weight is (10 * 52) + 100 = 620g. The correct average is 620 / 10 = 62g.

AI explanation

Using the method of average correction, if the recorded weight of each item is 10 g less than its actual weight, the overall average must also be corrected by adding that same difference. The correct average is the measured average of 52 g plus the 10 g error, giving 62 g.

Keep practicing — related questions