Bite-sized brain teaser to solve in a minute or less.
The Hotel Occupancy
Category: Algebra, Quick Logic
A hotel is 50% full with some number of rooms occupied. After 100 additional rooms have been checked-in to, it’s 75% full. How many rooms does the hotel have?
Solution
|
R = total number of rooms Initially 0.5 R occupied After 100 more check-ins = 0.75 R occupied 0.5 R + 100 = 0.75 R 100 = 0.25 R R = 400 rooms The hotel has 400 rooms |
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