Three of these are wrong. Find the one that holds.
Exercise and reference answers
- Questions
- Question
- Three of these statements about speed and time are false.
- Choices
- Item
- Inverse when the distance is fixed
- Correct
- Yes
- Explanation
- Faster means less time, so it is inverse.
- Item
- Direct when the distance is fixed
- Explanation
- It halves the time.
- Item
- Doubling speed doubles time
- Explanation
- Raising the speed always lowers the time.
- Item
- Time is independent of speed
Explanation
Each trap holds the wrong quantity fixed. Source: syllabus Maths, Ch 11 Direct and Inverse Proportions.