The cost of 4 pens and 4 pencil boxes is ₹100.three times the cost of a pen us ₹15 more than the cost of a pencil form the pair of linear equation for the above situation.find the cost of a pen and a pencil box
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Let the cost of pens and pencil boxes be x and y respectively.
4x + 4y = 100 .......(1)
3x = y + 15
3x - y =15....,.(2)
If u solve 1&2 you get x=10.
and y = 15.
4x + 4y = 100 .......(1)
3x = y + 15
3x - y =15....,.(2)
If u solve 1&2 you get x=10.
and y = 15.
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