Question

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

Answer 1

see the attachment for answers

Answer 2

Answer:

Step-by-step explanation:

Let the first term be a=150 and d=50

a₁ = 150

a₂ = a+d = 150 + 50 = 200

a₃ = a+2d = 150 + 100 = 250

a₄ = a+3d = 150 + 150 = 300

∴ Therefore, the AP is 150, 200, 250 and 300.