# User:Sujatasahu/Math-e-magic/QUICK REVISION

From WikiEducator

## Contents

## Terminology, Which in plain English, means, Names

**How Far Can you Go ?**----->>**Distance****How Quick Can you go?**------>>**Speed****How Long will you take to go where you want to go ?**------>>**Time**

*Those are the only three things that you need to be aware of while doing questions on Speed, Distance & Time*

## Variables, means short-forms for things that are not yet known

*So, Lets give these big words short names that are easy to remember*

- Lets give
**Distance**a smaller name and call it**D**

- And, lets give
**Speed**a smaller name and call it**S**

- And finally, lets shorten
**Time**to**T**

## Formulas, Or Rules that will help solve your problem

- There is really only one rule that you need to remember

**SPEED** = **DISTANCE** divided by **TIME**

**S = D** divided by **T**

## How do I use the formula to solve the Problem

Use this Image to remember the formula

Rules to use this formula:

- The variables in the bottom are multiplied
- The variable on the top is the dividend
- So, if one of the variable is unknowm, then just perform the operation on the other two as given in the triangle

i.e. ifTis not known then remove, T from the triangle and the two remainingDandSform the formulaDdivided byS

**So How do I approach a problem ?**

**Simple Problems**

- Read the Problem first and find out what information is given
- Out of the three, Speed, Distance and Time, two of them will be given
- If Speed is given, then say
**S****="given speed"** - If Distance is given, then say
**D****="given distance"** - If Time is given, then say
**T****="given time"** - List what needs to be found out
- Finally use the formula to find out whatever variable is missing.

- If Speed is given, then say

i.e. if S is not known, use D and T from the formula above to find it