Topics
Commercial Mathematics
Compound Interest
Shares and Dividends
Banking
Gst (Goods and Services Tax)
 Sales Tax, Value Added Tax, and Good and Services Tax
 Computation of Tax
 Concept of Discount
 List Price
 Concepts of Cost Price, Selling Price, Total Cost Price, and Profit and Loss, Discount, Overhead Expenses and GST
 Basic/Cost Price Including Inverse Cases.
 Selling Price
 Dealer
 Goods and Service Tax (Gst)
 Gst Tax Calculation
 Gst Tax Calculation
 Input Tax Credit (Itc)
Algebra
Coordinate Geometry Distance and Section Formula
Quadratic Equations
Factorization
Ratio and Proportion
Linear Inequations
Arithmetic Progression
Geometric Progression
Matrices
Reflection
Coordinate Geometry Equation of a Line
 Slope of a Line
 Concept of Slope
 Equation of a Line
 Various Forms of Straight Lines
 General Equation of a Line
 Slope – Intercept Form
 Two  Point Form
 Geometric Understanding of ‘m’ as Slope Or Gradient Or tanθ Where θ Is the Angle the Line Makes with the Positive Direction of the x Axis
 Geometric Understanding of c as the yintercept Or the Ordinate of the Point Where the Line Intercepts the y Axis Or the Point on the Line Where x=0
 Conditions for Two Lines to Be Parallel Or Perpendicular
 Simple Applications of All Coordinate Geometry.
Geometry
Loci
Circles
 Concept of Circle  Centre, Radius, Diameter, Arc, Sector, Chord, Segment, Semicircle, Circumference, Interior and Exterior, Concentric Circles
 Areas of Sector and Segment of a Circle
 Tangent Properties  If a Line Touches a Circle and from the Point of Contact, a Chord is Drawn, the Angles Between the Tangent and the Chord Are Respectively Equal to the Angles in the Corresponding Alternate Segments
 Tangent Properties  If a Chord and a Tangent Intersect Externally, Then the Product of the Lengths of Segments of the Chord is Equal to the Square of the Length of the Tangent from the Point of Contact to the Point of Intersection
 Tangent to a Circle
 Number of Tangents from a Point on a Circle
 Chord Properties  a Straight Line Drawn from the Center of a Circle to Bisect a Chord Which is Not a Diameter is at Right Angles to the Chord
 Chord Properties  the Perpendicular to a Chord from the Center Bisects the Chord (Without Proof)
 Theorem: Equal chords of a circle are equidistant from the centre.
 Converse: The chords of a circle which are equidistant from the centre are equal.
 Chord Properties  There is One and Only One Circle that Passes Through Three Given Points Not in a Straight Line
 Arc and Chord Properties  the Angle that an Arc of a Circle Subtends at the Center is Double that Which It Subtends at Any Point on the Remaining Part of the Circle
 Theorem: Angles in the Same Segment of a Circle Are Equal.
 Arc and Chord Properties  Angle in a Semicircle is a Right Angle
 Arc and Chord Properties  If Two Arcs Subtend Equal Angles at the Center, They Are Equal, and Its Converse
 Arc and Chord Properties  If Two Chords Are Equal, They Cut off Equal Arcs, and Its Converse (Without Proof)
 Arc and Chord Properties  If Two Chords Intersect Internally Or Externally Then the Product of the Lengths of the Segments Are Equal
 Cyclic Properties
 Tangent Properties  If Two Circles Touch, the Point of Contact Lies on the Straight Line Joining Their Centers
Constructions
Symmetry
Similarity
Mensuration
Trigonometry
Statistics
 Median of Grouped Data
 Graphical Representation of Data as Histograms
 Ogives (Cumulative Frequency Graphs)
 Concepts of Statistics
 Graphical Representation of Data as Histograms
 Graphical Representation of Ogives
 Finding the Mode from the Histogram
 Finding the Mode from the Upper Quartile
 Finding the Mode from the Lower Quartile
 Finding the Median, upper quartile, lower quartile from the Ogive
 Calculation of Lower, Upper, Inter, SemiInter Quartile Range
 Concept of Median
 Mean of Grouped Data
 Mean of Ungrouped Data
 Median of Ungrouped Data
 Mode of Ungrouped Data
 Mode of Grouped Data
 Mean of Continuous Distribution
Probability
definition
 Sales tax (ST): Sales tax (ST) is charged by the government on the sale of an item.
 Valueadded tax: A valueadded tax, known in some countries as a goods and services tax, is a type of tax that is assessed incrementally. It is levied on the price of a product or service at each stage of production, distribution, or sale to the end consumer, except a business is the end consumer which will reclaim this input value.
 Goods and Services Tax (GST): Goods and Services Tax is an indirect tax used in India on the supply of goods and services.
formula
 Sales tax = Tax % of Bill Amount
notes
Sales Tax, Valueadded tax, Goods and Services Tax:

Sales tax (ST) is charged by the government on the sale of an item. It is collected by the shopkeeper from the customer and given to the government. This is, therefore, always on the selling price of an item and is added to the value of the bill.
Sales tax = Tax % of Bill Amount 
A valueadded tax, known in some countries as a goods and services tax, is a type of tax that is assessed incrementally. It is levied on the price of a product or service at each stage of production, distribution, or sale to the end consumer, except a business is the end consumer which will reclaim this input value. It is similar to and is often compared to a sales tax.
 Goods and Services Tax (GST) is an indirect tax used in India on the supply of goods and services. Goods and services are divided into five different tax slabs for collection of tax  0%, 5%, 12%, 18% and 28%. However, petroleum products, alcoholic drinks, and electricity are not taxed under GST and instead are taxed separately by the individual state governments, as per the previous tax system. From July 1, 2017, the Government of India introduced GST. The tax came into effect from 1 July 2017 through the implementation of the One Hundred and First Amendment of the Constitution of India by the Indian government. The GST replaced existing multiple taxes levied by the central and state governments. The tax rates, rules, and regulations are governed by the GST Council which consists of the finance ministers of the central government and all the states.
Example
Example
Waheeda bought an air cooler for ₹ 3300 including a tax of 10%. Find the price of the air cooler before VAT was added.