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Graphical Method of Finding Solution of a Pair of Linear Equations

The cost of 4...

Question

The cost of 4 pens and 4 pencil boxes is Rs.100. Three times the cost of a pen is Rs.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.

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Solution

$Rs.10,Rs.15$

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Q. Question 4
The cost of 4 pens and 4 pencils boxes is Rs.100. there times the cost of a pen is Rs. 15 more than the cost of a pencil box,. Form the pair of linear equations for the above situation. Find the cost pen and a pencil box be Rs. y.

4

4

pencil boxes is Rs

100

. Three times the cost of a pen is Rs

15

more than the cost of a pencil box. The cost of a pen and a pencil box respectively are

Q. A pen and a pencil cost

R s .12

. Three pencils and five pens cost

R s .56

. Find the cost of one pen and one pencil.

Form the pair of linear equations in the following problems, and find their solution graphically:

5 pencil and 7 pens together cost Rs 50, whereas 7 pencils and 5 pens together cost Rs 46. Find the cost of one pencil and a pen.

A pen costs ₹ 45 and a pencil box costs ₹ 150. How much money will we need to buy 4 pens and 5 pencil boxes ?

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Graphical Method of Finding Solution of a Pair of Linear Equations

Standard X Mathematics

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