EASY
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0x+0y+k= 0k0 is a linear equation.

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Important Questions on Simultaneous Equations

EASY
A fraction becomes 13 when 2 is subtracted from the numerator and it becomes 12 when 1 is subtracted from the denominator. Find the fraction.
MEDIUM
The point of the intersection of the graph of the equations 3x-5y=19 and 3y-7x+1=0 is Pα, β. What is the value of 3α-β?
MEDIUM
A father's age is three times the sum of the ages of his two children. After 5 years, his age will be two times the sum of their ages. Find the present age of the father.
HARD
The area of a rectangle gets reduced by 80 square units, if its length is reduced by 5 units and the breadth is increased by 2 units. If we increase the length by 10 units and decrease the breadth by 5 units, the area is increased by 50 square units. Find the length and breadth of the rectangle.
MEDIUM
How many solutions will a pair of linear equations have, if the equations are 4x+5y-6=0 and 16x+20y+20=0?
HARD

Solve the following system of linear equations:

2x-3y=13

7x-2y=20

EASY
X and Y together have 1300. If 10 less than three-fifth of the amount X is equal to half of the amount Y, then how much does X have?
EASY
Find the value of x after solving the following equation. 
0.12× (5x - 4) = 0.5x + 0.8 
 
EASY
The sum of four consecutive even numbers is greater than sum of three consecutive odd numbers by 81. If the sum of least odd and even number is 59, then find the sum of the largest odd and even numbers.
MEDIUM

Solve the following system of linear equations:

x+y=3

4x-3y=26

EASY

The population of Patna city is 96000, the decreasing rate of population is 800 per year. Population of Patliputra is 68000, the increasing rate of population is 1200 per year. In how many years will the population of both places be equal?

MEDIUM
If we add 1 to the numerator  and subtract 1 from the denominator, a fraction reduces to 1. It becomes 12 if we only add 1 to the denominator. What is the fraction?
MEDIUM
A total of 57 sweets were distributed among 10 children such that each girl gets 6 sweets and each boy gets 5 sweets. Total number of boys is _____.
HARD

5 years ago, I was three times as old as my son. Ten years hence, I will be twice as old as my son. Find my present age and my son's present age.

EASY
A boat takes 10 hours to travel 30 km upstream and 44 km downstream, but it takes 13 hours to travel 40 km upstream and 55 km downstream. Find the speed of the boat in still water and the speed of the stream.
MEDIUM
The graph of the equation 5x-2y+1=0 and 4y-3x+5=0, intersect at the point Pα,β. What is the value of 2α-3β?
MEDIUM
Find the number of solutions of a pair of linear equation 4x-9y+13=0 and 2x+3y-13=0.
MEDIUM
A zoo has few number of penguins and polar bears. The total number of heads of both of them is 60 and total number of their feet is 160. How many polar bears are there in the zoo.