CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

A lending library has a fixed charge for the first three days and additional charge for each day thereafter. Saritha paid Rs.27 for a book kept for seven days, while Susy paid Rs.21 for the book she kept for five days. Find the fixed charge and the charge for each extra day.


Open in App
Solution

Step 1:Form the linear equations.

Consider the fixed charge be x and the Extra charge be y

As per the question

x+4y=27(1)x+2y=21(2)

Step 2:Solve the linear equations.

Subtract equation (2) from equation(1)

x+4y=27x+2y=21(-)(-)(-)...............................0x+2y=6...............................

2y=6y=3

puttingy=3 in equation (1) we get,

x+4(3)=27x+12=27x=2712x=15

Therefore, the fixed charge =15 and extra charge =3


flag
Suggest Corrections
thumbs-up
7
BNAT
mid-banner-image