A part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the mess. when a student A takes food for 25 days she has to pays rupee 2200 as hostel charges whereas a student B who takes food for 20 days pays rupee 1180 as hostel charges. find the fixed charges and the cost of food per days. elimination method.
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x=400 and y=30.
Hence, the fixed charges is Rs. 400 and the variable charges is Rs. 30 per day.
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