A lending library has a fixed charge for the first three days and an additional charge for each day ...

Question

A lending library has a fixed charge for the first three days and an additional charge for each day thereafter Saritha paid Rs27 for a book kept for seven days while Susy paid Rs21 for the book she kept for five days Find the fixed charge and the charge for each extra day

Accepted Answer

Let the fixed charge for the first three days be RsA and the charge for each day extra be RsB According to the information given A 4B 27 i A 2B 21 ii When equation ii is subtracted from equation i we get 2B 6 B 3 iii Substituting B 3 in equation i we get A 12 27 A 15 Hence the fixed charge is Rs15 And the Charge per day is Rs3

NCERT Solutions Class 10 Mathematics Solutions for Pair of Linear Equations in Two Variables - Exercise 3.4 in Chapter 3 - Pair of Linear Equations in Two Variables