45% of the rooms in a hotel are
booked. If 36 rooms are
booked, how many rooms are
in hotel altogether?

80 rooms.

Explanation: 45% out of 100% of rooms are booked. if there is 36 booked, you multiply 36 by 100 and then divide by 45

if u need the answers look it up on google youll find it trust im just saying this incase no one out : )