Question

A lending library has a fixed charge for the first two days and an additional charge for each day thereafter. Reema paid rs 30 for a book kept for 6 days, while Smitha paid rs 40 for the book she kept for 8 days. Find the fixed charge and the charge for each extra day. If Sonu kept a book for 4 days, how much he will have to pay

Answer 1

let fixed charge be x and charge per extra day =y
x+4y=30
x+6=40
therefore by elimination method we get
-2y=-10
y=5
now by substituting y we get
x+4×5=30
x+20=30
x=10
therefore fixed charge =rs 15
charge per extra day =rs3
hope its correct

Answer 2

Answer:

Step-by-step explanation:

Fixed charge = x

Charge per day = y

By question, using elimination method

x + 4y = 30 - - - eq 1

x + 6y = 40 - - - eq 2

- 2y = - 10

y = 5 - - - eq 3

Substituting eq 3 in eq 1,

x + 4*5 = 30

x = 30 - 20

x = 10

If sonu kept a book for 4 days = 4*5

then he had to pay = 20

HOPE THE ANSWER HELPS YOU

PLS MARK AS BRILLIANT

THANKS