In a hostel the rent per room is increased by 20%. If number of rooms in the hos

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Question
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?
Options
A. 30%
B. 40%
C. 44%
D. 48%

Correct Answer

44%

Explanation

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

So new collection = 12*12 = 144

% change in collection = (144-100)/100*100 = 44%

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Bank Exams

1. x, y and z are three numbers such that x is 30% of z and y is 40% of z. If x is p% of y, then what is the value of p?
Options
A. 45
B. 55
C. 65
D. 75

10. If a retailer offers a discount of 28% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up?
Options
A. 18.25 percent
B. 22 percent
C. 38.88 percent
D. 28 percent

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