# Simple Equations G7

9 Videos

00:30 Hours

Suppose you have to have Rs. 50/-, out of which you are told to keep Rs. 30/- to yourself. Excited, you go out to buy some chocolates. You know that your favourite chocolate costs Rs. 5 for each. And you need to buy 5 chocolates. What is the amount that you will get in return? In this chapter, we will learn how to find answers to equations like these in the simplest way.

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## Course Content

###### Speed of a Sound Wave and Wave Equation

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