Mathematics Class VII

Integers
Fractions and Decimals
Exponents and Powers
Algebraic Equations
Simple Linear Equations
Lines and Angles
Comparing Quantities
Congruence of Triangles
Rational Numbers
Perimeter and Area
Data Handling
Practical Geometry
Symmetry
Visualising Solid Shapes

Proportion

Proportion shows the equality between two ratios. If two ratios are in proportion then they must be equal.

How to solve proportion problems?

Example

If the cost of 8 strawberries is Rs. 64 then what will be the cost of 25 strawberries.

Solution

Using Unitary Method

Solution using proportion

Let the cost of 25 strawberries = Rs. x

Hence the cost of 25 strawberries is Rs. 200.

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