7. Percent

A city’s population grew from 120,000 to 138,000 people in one year. What is the percent increase in population?

A smartphone originally costs \$800 but is now sold for \$680. Determine the percent decrease in price.

Last season, a farmer harvested 500 kg of rice. Due to improved techniques, the harvest is estimated to increase by 20% this season. How much rice is the farmer looking to harvest this season?

A reservoir’s water level decreased by 20% over the summer due to evaporation. If the water level is currently at 120 million liters, how much water was there initially?