Question

In boring a well 50m deep the cost is rs.100 for first meter. the cost of each successive meter increases by Rs.50 .what is the cost of borinh the entire well

Answer 1

Answer:

then..........................

Answer 2

Step-by-step explanation:

Given In boring a well 50 m deep the cost is rs.100 for first meter. the cost of each successive meter increases by Rs.50 .what is the cost of boring the entire well

• For successive meters the cost of boring will be 100,150, 200,250……
• Now n = 50, a = 100, and d = 50
• So sum to n terms of series is given by  
• Sn = n/2 (2a + (n – 1) d )
•      = 50/2 (2(100) + (50 – 1) 50)
•     = 25 (200 + 49 x 50)
•     = 25 (200 + 2450)
•      = 25 x 2650
•      = 66,250

So the cost of boring entire well will be Rs 66,250

Reference link will be

https://brainly.in/question/140013