educational

Parin Sir > educational

Jun

☼ Cost Price : The price at which an article is purchased, is called its cost price. Symbolically it is written as C.P.

☼ Selling Price : The price at which an article is sold, is called it…

Posted in: Profit And Loss,

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Jun

Index

00. Introduction

Posted in: Index,

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Jun

Index

01. Introduction

02. Per-thousand

03. Examples 1 to 5

Posted in: Index,

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Jun

Examples 16 to 22

(16) (i) If the diameter of a circle increases by 30%, its circumference will increase by how many percentage ?

(ii) In above example area of the circle will increase by how many percent ?

Soln.

Posted in: Examples 16 to 22,

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Jun

Examples 11 to 15

(11) The value of a machine depreciates at the rate of 10 % per annum. If its present value is Rs. 8100, what will be its worth after 2 years ? What was the value of the machine 2 years ago ?

Soln.

Value of the machine a…

Posted in: Examples 11 to 15,

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Jun

Examples 6 to 10

(6) What percent is :

(i) 120 of 80 (ii) 125 ml. of 7.5 litres (iii) 10 gm of 1 kg ?

Soln. (i) Let, x % of 80 = 120

Posted in: Examples 6 to 10,

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Jun

Examples 1 to 5

(1) Express each one of the following as a fraction :

(i) 55 % (ii) 0.3 % (iii) 0.08 %

(i) 55 % = $\frac{55}{100}$

Posted in: Examples 1 to 5,

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Jun

Per-thousand

☼ Per-thousand :

l = Per-thousand = $\frac{1}{1000}$

i.e. x l =

Posted in: Per-thousand,

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Jun

Introduction

☼ Percent :

% = Percent = per hundred = $\frac{1}{100}$ $\left (\te... </p> <div class=$

Posted in: Percentage,

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