# Time, Work and Distance

**Time, Work and Distance Important Questions - Page 4**

** Time, Work and Distance Video Lecture - Page 5**

## Time And Distance

Decision making for planning, policy, and management relies increasingly on quantitative reasoning, which entails the collection, analysis and interpretation of quantitative data. This course is designed to introduce principles and techniques to solve time and distance related problems.

Develop Logical Reasoning in a Problem-Solving Framework. One goal is to develop a disciplined logical analysis of “word” problems. Such reasoning is the foundation for building simple mathematical models of problems – models implicit in counting time and distance. A good way to learn this logical thinking is by working many exercises. Students will use this reasoning often (consciously or unconsciously) in computer science, operations research, and probability and statistics. However, a logical mind will serve a person well in ANY field.

**At the end of these course students:**

To be understood the types of formula are used to measure time and Distance.

To be able to calculate time and distance while an object that moves at a constant rate is said to be in uniform motion, Uniform motion problems may involve objects going the same direction, opposite directions, or round trips.

To be solving many problems related to time and distance and which can be useful to students to face interviews.

**Prerequisities (Important Formulas):**

Speed = **Distance/Time**

Time = **Distance/speed**

Distance = speed*time

**1km/hr** = **5/18 m/s**

**1 m/s** = **18/5 Km/hr**

If the ratio of the speed of A and B is a:b,then the ratio of the time taken by them to cover the same distance is 1/a : 1/b or b:a

Suppose a man covers a distance at x kmph and an equal distance at y kmph. then the average speed during the whole journey is (2xy/x+y) kmph

An object that moves at a constant rate is said to be in uniform motion. The formula d = rt gives the relationship between distance d, rater, and time t. Uniform motion problems may involve objects going the same direction, opposite directions, or round trips.