Cost of 7pens and 8pencils id Rs 87 and cost of 6 pens and 4 pencils is 66. Write linear equations representing the above data and draw its graph. Also find cost of 1pencil and 1pen from the graph.Ver very very urgent tommorrow is my paper!!!
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cost of one pen 9,pencil 3
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Let cost of 1 pen = Rs. x
cost of 1 pencil = Rs. y
A/q-
7x + 8y = 87 -----------------------(I)
6x + 4y = 66
or 2x + 3y =33 --------------- (II)
Solving wquation (I) and (II) we get --
Cost of 1 Pen = x=Rs. 9
Cost of 1 Pencil =y= Rs. 3
(use Scale and pencil to draw the graph)
cost of 1 pencil = Rs. y
A/q-
7x + 8y = 87 -----------------------(I)
6x + 4y = 66
or 2x + 3y =33 --------------- (II)
Solving wquation (I) and (II) we get --
Cost of 1 Pen = x=Rs. 9
Cost of 1 Pencil =y= Rs. 3
(use Scale and pencil to draw the graph)
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