Question

5 pencils and 7 pens together cost 50, whereas 7 pencilsand 3 pens together
cost rs.46. Find the cost of one pencil and that of one pen.
form the linear equation , find solutions graphically
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Answer 1

see below

Step-by-step explanation:

Let the cost of 1 pencil be x,then cost of 5 pencils be 5x Let cost of 1 pen be y then cost of 7 pens be 7y so linear equation become 5x+7y=50 (to show it graphicaly take x=1 and find value of y then take y =1 then show it one graph)Do this same in second case and show it graphicaly

{showing on graph cannot be possible for me but tell you the way of how to do question,I don't have graph at this time otherwise I will show it on graph,If any doubt comment}

Answer 2

Answer:

5x+7y=50

7x+3y=46 from this we get x=13/42

y=6155/82