The cost of drilling a tubewell is ₨. 2.50 per foot for the first 100 feet and an additional Re. 0.25 for every subsequent foot. Find the cost of the last foot and the total cost of 220 feet deep tubewell.
To find the cost of the last foot, we need to determine the cost per foot after the first 100 feet.
The additional cost per foot after the first 100 feet is Re. 0.25.
So, the cost of the last foot is Re. 0.25.
To find the total cost of a 220 feet deep tubewell, we need to sum up the cost of the first 100 feet and the cost of the remaining 120 feet.
The cost of the first 100 feet is ₨. 2.50 per foot.
So, the cost of the first 100 feet is ₨. 2.50 * 100 = ₨. 250.
The cost of the remaining 120 feet is Re. 0.25 per foot.
So, the cost of the remaining 120 feet is Re. 0.25 * 120 = ₨. 30.
Therefore, the total cost of a 220 feet deep tubewell is ₨. 250 + ₨. 30 = ₨. 280.
To find the cost of the last foot and the total cost of a 220 feet deep tubewell, we need to calculate the cost of drilling for each section separately and then sum them up.
Let's break it down step by step:
Step 1: Calculate the cost of the first 100 feet.
The cost per foot for the first 100 feet is ₨. 2.50.
So, the cost of drilling the first 100 feet is 100 feet * ₨. 2.50/foot = ₨. 250.
Step 2: Calculate the cost of the remaining 120 feet.
For each subsequent foot beyond the first 100 feet, the cost is an additional Re. 0.25.
So, the cost of each subsequent foot is Re. 0.25.
Therefore, the cost of drilling the remaining 120 feet is 120 feet * Re. 0.25/foot = ₨. 30.
Step 3: Calculate the cost of the last foot.
The total depth of the tubewell is 220 feet.
Since we have already calculated the cost of the first 100 feet and the remaining 120 feet, the last foot is included in the remaining 120 feet.
Therefore, the cost of the last foot is Re. 0.25.
Step 4: Calculate the total cost of the 220 feet deep tubewell.
To find the total cost, we add up the cost of the first 100 feet, the cost of the remaining 120 feet, and the cost of the last foot.
Total cost = ₨. 250 + ₨. 30 + Re. 0.25 = ₨. 280.25.
So, the cost of the last foot is Re. 0.25 and the total cost of the 220 feet deep tubewell is ₨. 280.25.
Give me full and
1st 100 ft = 250
then .25(x-100)