Why does prices rise when the demand of a product is high?

Lasting peace is possible today because we have learned from the experiences of the last 30 years that peace is a process requiring mutual restraint and practical arrangements. this conference is a part of that process – a challenge, not a conclusion. we face unresolved problems in europe; we face them with very real differences in values and aims. but if we deal with them with careful preparation,…we have the right to expect real progress

If a hotel has 100 rooms, and each room takes 25 minutes to clean, how many housekeepers working 8-hour shifts does the hotel need at 50 percent occupancy?

Shelly bought a house five years ago for $150,000 and obtained an 80% loan. now the home is worth $140,000 and her loan balance has been reduced by $12,000. what is shelly's current equity?