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Sahay Sir > Question Answers > NCERT Class 10 > Maths > Chapter 3 - Pair of Linear Equations in Two Variables > The cost of 4 pens and 4 pencils boxes is ₹100. Three times the cost of a pen is ₹15 more than the cost of a pencil box. Form the pair of linear equations for the above situation. Find the cost of a pen and a pencil box.

The cost of 4 pens and 4 pencils boxes is ₹100. Three times the cost of a pen is ₹15 more than the cost of a pencil box. Form the pair of linear equations for the above situation. Find the cost of a pen and a pencil box.

If 8 is subtracted from each of the numbers the ratio becomes 4 : 5. Find the numbers. Two number are in the ratio 5 : 6