Question

(v) Alending library has a fixed charge for the first three days and an additional charge
for each day thereafter. Saritha paid 27 for a book kept for seven days, while Susy
paid 21 for the book she kept for five days. Find the fixed charge and the charge
for each extra day.​

Answer 1

Answer:

firstly let fixed charge =X

then let charge per day =y

then equations will be

X+4y=27and X+2y=21

then subtract these two equations

on subtracting u will get y=3

then put value of y in X+4y=27

you will get X=15

so fixed charge =15rs

and charge per day=3rs