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A part of monthly hostel charge is fixed...

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 Swati takes food for 20 days, she has to pay Rs. 3000 as hostel charges whereas Mansi who takes food for 25 days pays Rs. 3500 as hostel charges. Find the fixed charges and cost of food per day.

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The correct Answer is:
The fixed hosted charges is Rs. 1000 and charges per day for food is Rs. 100.
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