Question

A lending library has a fixed charge for the first 7 days and an additional charge for each day thereafter. Sahil paid Rs . 215 for a book kept for 15 days while Ravi paid Rs . 305 for the book he kept for 21 days. Find the fixed charge?

Q: Answer-A lending library has a fixed charge for the first 7 days and an additional charge for each day ther...

Let the fixed charge for first 7 days be Rs x and Additional charge per day Rs y As per question Sahil paid Rs 215 for 15 days First 7 days charge additional charge per day total days x 8 y 215i Ravi paid Rs 305 for Rs 21 days x 14 y 305ii By solving i and ii, we get y 15 So, the additional charge per day Rs 15 By putting the value of y in i, we get x 8 y 215 x 8 15 215 x 215 120 Rs 95 Fixed charge for first 7 days in Rs 95.