Use a/ 1-r
Where a = 18 and r = 1.2
18/ 1 - 1.2 = 18/-.2 = -90
Because the answer is below 1. The sum does not exist therefore it diverges.
Correct Question : The sum of squares of two consecutive positive odd numbers is 514. Find the numbers.

Solution :
Let the two consecutive positive odd numbers be x and (x + 2)

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When,



Based on the picture I would say:
-4 + -2 = -6
If you just want to solve for h, as it appears, isolate h by dividing both sides of the equation by 6.25.
That leaves h = 16. (16 hours, presumptively).