In a hostel the rent per room is increased by 20%. If number of rooms in the hostel is also increased by 20% and the hostel is always full, then what is the percentage change in the total collection at the cash counter?

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Let initial rent be rs 10 And initial rooms be 10 So initial collection = 10*10 = Rs 100 Now new rent = 10 + 20% of 10 = 12 New no of rooms = 10 + 20% of 10 = 12

In a hostel the rent per room is increased by 20%. If number of rooms in the hostel is also increased by 20% and the hostel is always full, then what is the percentage change in the total collection at the cash counter?

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