7. A public library charges a fixed rate for first two days and an addtional charge for each day
thereafter. Kavya paid20 for a book kept for 5 days. If fixed charges are *x and per day
charges are y make a linear equation for the above statement.
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Answer:
fixed charges for first 2 days = x
charges for remaining three days = 3y
total charges for five days = x + 3y
total charges paid by kavya = 20
hence
x + 3y = 20
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