RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.10 Solutions Points A and B are 70 km a part on a highway. A car starts from A and another car starts from B simultaneously. If they travel in the same direction, they meet in 7 hours, but if they travel towards […]
RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.9 Solutions A father is three times as old as his son. After twelve years, his age will be twice as that of his son then. Find their present ages. Watch Solution Ten years later, A will be twice as old as B and
RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.8 Solutions The numerator of a fraction is 4 less than the denominator. If the numerator is decreased by 2 and denominator is increased by 1, then the denominator is eight times the numerator. Find the fraction. Watch Solution A fraction becomes 9/11 if
RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.7 Solutions The sum of two numbers is 8 . If their sum is four times their difference, find the number. Watch Solution The sum of digits of a two digit number is 13 . If the number is subtracted from the one obtained
RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.6 Solutions 5 pens and 6 pencils together cost Rs 9 and 3 pens and 2 pencils cost Rs 5 Find the cost of 1 pen and 1 pencil. Watch Solution 7 audio cassettes and 3 video cassettes cost Rs 1110, while 5 audio
RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.5 Solutions Determine whether the system has a unique solution, no solution or infinitely many solutions. In case there is a unique solution, find it : x – 3y = 3, 3x – 9y = 2 Watch Solution Determine whether the system has
RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.4 Solutions Solve the systems of equations by the method of cross-multiplication : x + 2y + 1 = 0, 2x – 3y – 12 = 0 Watch Solution Solve the systems of equations by the method of cross-multiplication : 3x + 2y +
RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.3 Solutions Solve the following systems of equations: 11x+15y+23=0, 7x-2y-20=0 Watch Solution Solve the following systems of equations: 3x-7y+10=0, y-2x-3=0 Watch Solution Solve the following systems of equations: 0.4x+0.3y=1.7, 0.7x-0.2y=0.8 Watch Solution Solve the following systems of equations: x/2 +y=0.8, 7/(x + y/2) =10
Pairs of Linear Equations in Two Variables Exercise 3.2 Solutions Solve the following systems of equations graphically: x+y=3, 2x+5y=12 Watch Solution Solve the following systems of equations graphically: x – 2y = 5, 2x + 3y = 10 Watch Solution Solve the following systems of equations graphically:2x + y – 3 = 0, 2x –
Pairs of Linear Equations in Two Variables Exercise 3.1 Solutions Akhila went to a fair in her village. She wanted to enjoy rides on the Giant Wheel and play Hoopla (a game in which you throw a rig on the items in the stall, and if the ring covers any object completely you get it).