Question

The cost of borewell drilling cost per feet is 1000 for first feet and rises by 250 for each subsequent feet. Find the charge when good water found after digging borewell about 161 feet.​

Answer 1

Answer:

Here a = 1000 and d = 110 and nth term is 160

nth term = a + ( n-1)d

So charge for borewell work ( i.e 160 feet digging) = 1000 + ( 161-1)250 =  ₹ 41,000

Step-by-step explanation:

Answer 2

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Here a = 1000 and d = 110 and nth term is 160

nth term = a + ( n-1)d

So charge for borewell work ( i.e 160 feet digging) = 1000 + ( 161-1)250 =  ₹ 41,000

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