Special Tricks Quant (Compound Interest)

Percentage wise distribution of Topics For Tier-II

Compound Interest

→ The amount A due after t years, when a principal P is given on compound interest at the rate R% per annum is given by -

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Must Do: Speed, Distance and Time tricks with Example

Time and Distance The term times and distance area related to the speed of moving objects Speed — We define the speed of an object as the distance covered by it in a unit time interval. Speed =(Distance travelled)/(time taken) ⇒ Distance travelled = Speed × time ⇒ Time = Distance/Speed Unit of measurement If distance is measured in kilometer, we measure time in hours and speed is written as km/hr. If distance is measured in meter, then time is taken in second and speed written as m/s Conversion of unit 1 km/hr = (1000 mtr)/(60×60 seconds)=5/18 m/s 1 m/s =18/5 km/hr Ex. – A train having length 500 m passes a pole in 30 second. Find the speed of a train (in km/hr) ⇒Speed=Distance/time=500/30 m/s =500/30×18/5 km/hr = 60 km/hr Some useful short cut methods

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Tricks to Solve Quadratic Equation With Examples

Quadratic equations – These are the equations which look like ax 2 + bx + c = 0 These equations are asked in the competitive examinations in a set of 5 questions. Enough with the theory, the question in exams look like - In each of the following questions, two equations are given. Solve these equations and give answer: A) If x >= y, i.e. x is greater than or equal to y B) If x > y, i.e. x is greater than y C) If x <= y, i.e. x is less than or equal to y D) If x < y, i.e. x less than y E) If x = y, or no relation can be established between x and y Question 1: . Here we will discuss a method to solve these equations with minimal writing and as reduced time as possible. Keep in mind; we are doing exactly what we used to do before, just in a less time and less writing. +b +c * +a Note that I have written coefficients along with their signs +5 +6 * +1 Now, the next task for us is to find the factors in a way which when multiplied give c*a +5 +6 (whic

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