2020 · Q37
The maximum marks in a test are converted from 250 to 50 for the purpose of an Internal Assessment. The highest marks scored were 170 and lowest marks were 70. What is the difference between the maximum and minimum marks scored in the Internal Assessment?
Elementary MathematicsStatistics
- A15
- B17
- C20
- D24
Explanation
The scale maps 250 marks to 50, i.e. divides by 5. The internal-assessment range is therefore (170 − 70)/5 = 100/5 = 20.