CBSE Class 10 linear_equations — practice questions
17 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 10 linear_equations in the app →How many solutions does the system 2x + 3y = 5, 4x + 6y = 11 have?For x − y = 1 and 2x − 2y = 2, how many solutions?Which system has a unique solution?A pair of equations is called inconsistent when:Find the value of k so that kx + 3y = 7 and 4x + 6y = 14 represent coincident lines.Solve by substitution: x + y = 10, x − y = 4.Solve by elimination: 3x + 4y = 11 and 5x − 4y = 5.Solve 2x + 3y = 12 and x − y = 1.Find x and y in 5x − 7y = 2 and 7x − 5y = 22.Solve 4x + 3y = 11 and 3x − 4y = 2.A pair of equations gives a single solution iff:The sum of two numbers is 25 and their difference is 5. Find them.A father is 30 years older than his son. After 5 years the father will be three times as old as the son. Find A boat travels 30 km downstream and 18 km upstream in 4 hours. It also travels 40 km downstream and 24 km upstSolve 1/x + 1/y = 1/3 and 1/x − 1/y = 1/12.Five years ago A was thrice as old as B. Ten years later A will be twice as old as B. Find their present ages.A two-digit number has digits whose sum is 9. Reversing the digits decreases the number by 27. Find the number