Question

A lending library has a fixed charge for the first three days and an additional charge for each day thereafter saritha paid Rs 27 for a book kept for seven days ,while susy paid Rs21 for the book the kept for five days .Find the fixed charged and the charged for each extra day.​

Answer 1

Answer:

ANSWER

Let the fixed charge be Rs. x

and the extra charge be Rs. y

x+4y=27⟶(i)

x+2y=21⟶(ii)

On substracting (i) and (ii),

2y=6

y=3

putting y in (i),

x+4(3)=27

x=15

∴x=Rs.15 and y=Rs. 3

∴ Fixed charge =Rs. 15

∴ Charge for each extra day =Rs. 3 .