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The cost of a pencil is Rs.2 and one ball point pen costs Rs.15. Sheela pays Rs.100 for the pencils and pens she purchased.Express the given statement as a linear equation in two variables. |
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Answer» The linear equation in TWO variable is Step-by-step explanation: GIVEN : The cost of a pencil is Rs.2 and one ball point pen costs Rs.15. Sheela pays Rs.100 for the pencils and pens she purchased. To FIND : Express the given statement as a linear equation in two variables ? Solution : Let the number of pencil be 'X'. The cost of a pencil is Rs.2. The cost of x pencil is Rs.2x Let the number of ball point pen be 'y'. The cost of a ball point pen is Rs.15. The cost of y ball point pen is Rs.15y Total cost of pencils and pens she purchased is Rs.100 So, The required equation form is Therefore, The linear equation in two variable is |
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