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. The cost of a notebook •is twice the cost of a pen. Write a. linear equation in two variables to represent this sta.tement. ( Take the cost of a notebook to be r x and that of a pen to be r y).

. The cost of a notebook •is twice the cost of a pen. Write a. linear equation in two variables to represent this sta.tement.
( Take the cost of a notebook to be r x and that of a pen to be r y).

Grade:12th pass

2 Answers

Pawan Prajapati
askIITians Faculty 9723 Points
11 months ago
Let cost of a notebook = f x and cost of a pen = ' y. According to given condition, x = 2y x - 2y = 0.
ushan pathak
11 Points
7 months ago
 
Let cost of a notebook be  Rs. x and cost of a pen be Rs.  y.  then,
 x = 2y   x - 2y = 0
 
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