Page 309 - ICSE Math 8

PROFIT, LOSS, DISCOUNT AND TAX

Integrated with Commerce
The cars which are more than 4 metre in length fall into the category of
luxury cars. The new GST (Goods and Services Tax) rates on luxury cars
is 43% which was 51.6% earlier.

If the price of a car is ` 14,00,000 before GST, find the price after applying
43% GST.

SIMPLE INTEREST AND COMPOUND INTEREST

Integrated with Banking
Albert Einstein called compound interest the “eighth wonder of the world”.
He wrote: “He who understands it earns it; he who doesn’t pays it.”
Your brother wants to invest ` 20,000 for the next 20 years. He has two options
—Bank A offers simple interest at a rate of 8%. Bank B uses compound interest
at a rate of 8% compounded yearly. Help your brother choose the right bank
for maximum returns.

ALGEBRAIC IDENTITIES

Integrated with Computers
Create a presentation on 'Discovery of Algebra'. Include information
related to the mathematician(s) credited for the discovery. Also include
information related to the algebraic identities. You can also insert
images and videos of your choice.

LINEAR EQUATIONS AND INEQUATIONS IN ONE VARIABLE
Integrated with Physics and Chemistry

Many equations in Physics require the knowledge of algebra to solve them. The algebraic equation,
Mass
Density = , is used in Chemistry and Physics to find the density of a substance given its mass and volume.
Volume
Given the mass and volume of a sample of liquid mercury as 67.5 grams and 5.00 mL. Use the density formula
to find the density of mercury.

UNDERSTANDING QUADRILATERALS
Integrated with Architecture
Quadrilaterals are used by architects in drawing a blueprint or design of a
house as shown alongside.
Draw a design of your house using quadrilaterals. Also, indicate the
dimensions. Refer the given diagram. The number of rooms may vary.
Interesting Facts
The Golden Quadrilateral, or GQ is a highway network connecting Chennai,
Kolkata, Delhi and Mumbai and major industrial, agricultural and cultural
centres of India. It forms a quadrilateral.

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