Be green

If the average bath time is 15 minutes, and the water flow from the shower is 10 liters per minute, how many liters of water will a person use during one bath?

Compare the water usage during hand dishwashing to the water usage when using a dishwasher. If hand dishwashing uses an average of 30 liters of water, and the dishwasher uses 15 liters of water per cycle, how many liters of water can be saved by using the dishwasher for a month?

If the average hand washing time is 20 seconds, and the faucet uses 2 liters of water per minute, how many liters of water will a person use when washing hands three times a day for a week?

In the river, 100 kg of waste was found. After conducting a cleanup operation, 75% of the pollutants were removed. How many kilograms of waste remained in the river after the cleanup?

If the level of PM2.5 particulate matter in the air is 50 μg/m³, and the healthy level is 10 μg/m³, how many times is the air polluted?

If a car consumes 8 liters of gasoline per 100 kilometers, and CO2 emissions are 2.3 kg per liter of gasoline, how much CO2 will the car emit during a 200-kilometer trip?

If a house consumes an average of 500 kWh of electricity per month, and the production of this energy requires burning coal, emitting 1.2 kg of CO2 per kWh, how much CO2 does the house emit per month?

If a plane consumes an average of 4 liters of fuel per 100 kilometers, and CO2 emissions from one liter of fuel are 2.5 kg, how much CO2 will the plane emit during a 1000-kilometer flight?

If an average of 2 kg of waste is produced per day in a household, how much waste will the residents produce in a week?

If thanks to waste segregation, the amount of waste has been reduced by 25%, and initially 40 kg of waste was produced per month, how much waste remains after the reduction?

If a total of 1000 kg of waste was collected and 30% of it is recyclable materials, how many kilograms of materials were successfully recycled?

If each waste bag has a capacity of 30 liters, how many bags do we need to fit 150 kg of waste?