Two are true, one is not

Exercise and reference answers

Questions

1. False statement

   At fixed distance, speed and time vary directly

   Statements

   1. At fixed speed, distance and time vary directly
   2. At fixed distance, speed and time vary inversely
   3. At fixed distance, speed and time vary directly

2. False statement

   Faster travel lengthens the time for a route

   Statements

   1. Faster travel lengthens the time for a route
   2. Speed times time gives distance
   3. Faster travel shortens the time for a route

3. False statement

   Doubling the speed doubles the time

   Statements

   1. A train at uniform speed covers distance proportional to time
   2. Doubling the speed doubles the time
   3. Doubling the speed halves the time

Explanation