The monthly charge for water is 3 naira for the first 1000 litres and 5k for each additional 100 litres. A man used 3000 litres in a month. How much should he pay?
The man used a total of 3000 liters of water.
The first 1000 litres have a charge of 3 naira per litre, so the cost for the first 1000 litres is 3 * 1000 = <<3*1000=3000>>3000 naira.
The remaining 2000 litres are charged at a rate of 5 naira per 100 liters. Since there are 20 lots of 100 litres in 2000 litres, there will be a charge of 20 * 5 = <<20*5=100>>100 naira.
Therefore, the total charge for the man should be 3000 + 100 = <<3000+100=3100>>3100 naira. Answer: \boxed{3100}.
To calculate how much the man should pay for using 3000 liters of water in a month, we need to break down the charges based on the given rates.
1. First, we calculate the charge for the first 1000 liters:
Cost for the first 1000 liters = 1000 liters * 3 naira per liter
2. Next, we calculate the charge for the remaining 2000 liters:
Additional liters = 3000 liters - 1000 liters = 2000 liters
Additional charges = (2000 liters / 100 liters) * 5 naira per 100 liters
3. Finally, we add the charges for the first 1000 liters and the additional charges to find the total amount he should pay:
Total charges = Cost for the first 1000 liters + Additional charges
Let's calculate it step by step:
1. Cost for the first 1000 liters:
Cost for the first 1000 liters = 1000 liters * 3 naira per liter
= 3000 naira
2. Additional charges for the remaining 2000 liters:
Additional liters = 3000 liters - 1000 liters = 2000 liters
Additional charges = (2000 liters / 100 liters) * 5 naira per 100 liters
= (20 * 5) naira
= 100 naira
3. Total charges:
Total charges = Cost for the first 1000 liters + Additional charges
= 3000 naira + 100 naira
= 3100 naira
Therefore, the man should pay 3100 naira for using 3000 liters of water in a month.
To calculate the amount the man should pay for using 3000 litres of water in a month, follow these steps:
Step 1: Calculate the charge for the first 1000 litres:
The monthly charge for the first 1000 litres of water is 3 naira.
Step 2: Calculate the charge for the additional 2000 litres:
To find out how many additional 100 litres there are in 2000 litres, divide 2000 by 100:
2000 litres ÷ 100 litres = 20 additional 100 litres.
Step 3: Calculate the charge for the additional 2000 litres:
The charge for each additional 100 litres is 5 naira.
Multiply the number of additional 100 litres by the charge for each additional 100 litres:
20 additional 100 litres × 5 naira = 100 naira.
Step 4: Calculate the total amount to be paid:
Add the charge for the first 1000 litres (3 naira) to the charge for the additional 2000 litres (100 naira):
3 naira + 100 naira = 103 naira.
Therefore, the man should pay 103 naira.