Express each of the following statements in the form of a linear equation in two variables:
a)
A lending library has a fixed charge for the first three days and an additional charge for each thereafter Sarita paid rupees 27 for a book and kept it for seven days
b) Radha scored 68 marks in a test, getting 3 marks for each correct answer and losing 1/2 marks for each wrong answer.
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Answer:
a) let x fixed charge and y charge for a day
x+4y=27
b)let x number of correct questions and y be number of incorrect questions
3x-1/2y=68
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