The cost of 2 pens and 3 books is ₹230, and the cost of 4 pens and 5 books is ₹400. Find the cost of one pen and one book.
Simultaneous Linear Equations
Original Khojo Papers practice question — not from a past board paper.
x = 2 and y = 3
No citable source has been recorded for this record. Treat it as practice material, not as fact.
From the second equation x = 5 − y. Substituting gives 10 − 2y + 3y = 13, so y = 3 and x = 2.
From the same topic and chapter, at a similar level.
The cost of 2 pens and 3 books is ₹230, and the cost of 4 pens and 5 books is ₹400. Find the cost of one pen and one book.
Simultaneous Linear Equations
Five years ago a father was seven times as old as his son. Five years hence the father will be three times as old as his son. Find their present ages.
Simultaneous Linear Equations
Solve by elimination: 4x + 3y = 17 and 2x − 3y = 1.
Simultaneous Linear Equations
Solve: 3x − 2y = 5 and x + 4y = 11.
Simultaneous Linear Equations
The sum of two numbers is 35 and their difference is 9. Find the numbers.
Simultaneous Linear Equations
Solve by cross multiplication: 2x + 3y = 12 and 3x − 2y = 5.
Simultaneous Linear Equations