**Measurement-Money**

Money is useful for purchasing things like chocolates, pencils, vegetables, etc. In India we have currency in rupees and paisa.

**Here are some coins and notes we use in India:**

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**Conversion of Money:** Here we will learn the ways to convert rupees into paisa and vice versa.

Example 1: Convert 5.09 rupees into paisa

Solution: We know that 1 rupee = 100 paisa

Therefore, 5.09 rupee = 5.09×100 = 509 paisa

Example 2: Convert 78 paisa into rupees

Solution: We know that 1 paisa = 1/100 rupees

Therefore, 78 paisa = 78/100 = 0.78 rupee

**Try These:**

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- Convert the following amounts into paisa:

- 8.10
- 0.95

- 12.24

- Convert the following amounts into rupees:

- 775 paisa
- 38 paisa

- 3099 paisa

**Some Important Terms and Formulae**

**Cost Price:**The price at which an article is purchased, is called its cost price. It is denoted by CP.

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**Selling Price:**The price at which any article is sold, is called its selling price. It is denoted by SP

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**Profit:**When the SP is more than CP, profit exists. It is defined as the difference between SP and CP.

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**Loss:**When the CP is more than SP, then the article is sold at a loss. It is the difference between CP and SP.

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Example: Radhika bought a TV for Rs 23,500 and sold at a loss of Rs 4,780. Find the selling price.

Solution: CP = Rs 23,500

Loss = Rs 4,780

SP = CP – Loss = Rs (23,500 – 4,780) = Rs 18,720

**Practice Exercise**

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**Recap**

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- 1 rupee = 100 paisa
- Profit = Selling price – Cost Price
- Loss = Cost Price – Selling Price
- Profit % = [(Profit / CP)×100] %
- Loss % = [(Loss / CP)×100] %