Question

(v) A lending 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:

27 for seven days; additional charge is for 7-3 =4 days. So, 3x+4y=27 as 3 days has fixed charge and 4 days has additional charge for Saritha. Susy paid Rs. 21 for five days; additional charge is for 5-3=2 days.