Question

lending library has fixed charge for the first 3 days and an additional charges for each day thereafter John paid 27 for a book the first 7 days. the fixed charges be rupees x and subsequent per day charges be y write the linear equation representing the above information and draw the graph of the same .from the graph of the fixed subsequent per day charge. and if the per day charges rupees 4 for find the fixed charge when charges rupees 7

Answer 1

Given fixed charges = Rs x
Charge per day = Rs y
Given Aarushi paid Rs.27 for a book kept for seven days
That is fixed charge for 3 days + variable charge for 4 days
Hence x + 4y = 27