Question

the cost of digging a well after every metre of digging,when it costs$150 for the firts metre and rises by $50 for each subsequent metre.​

Answer 1

Answer:

250

Step-by-step explanation:

Answer 2

Answer:

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⇒★

We can write the given condition as;

➪Cost of digging a well for first metre = Rs.150

➪Cost of digging a well for first 2 metres = Rs.150+50 = Rs.200

➪Cost of digging a well for first 3 metres = Rs.200+50 = Rs.250

➪Cost of digging a well for first 4 metres =Rs.250+50 = Rs.300

And so on.

➪Clearly, 150, 200, 250, 300..forms an A.P. with a common difference of 50 between each term.