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Standard IX
Mathematics
Linear Equation in 2 Variables
The cost of n...
Question
The cost of notebook is twice the cost of a pen. Write a linear equation in two variable to represent this statement.
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Solution
Let the cost of a pen be Rs.
x
and that of a notebook be Rs.
y
.
We are given that
y
=
2
x
Hence, the required linear equation.
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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 statement.
Q.
The cost of a notebook is twice the cost of a pen. Write a linear equation in two variable to represent this statement.
( Take the cost of a notebook to be
R
s
.
x
and that of a pen to be
R
s
.
y
).
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