Question

A part of monthly hostel charge is fixed and the remaining depends on the number of days one has taken food in the mess. When Bhawana takes food for $20$ days, she has to pay Rs. $2600$ as hostel charges; whereas when Divya takes food for $26$days, she pays, Rs. $3020$ as hostel charges. Find the cost of food per day.

Answer 1

Let the fixed charges be $x$ & daily charges be $y$

$\Rightarrow x+20y=2600$

and $x+26y=3020$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$6y=420\Rightarrow y=70$