Question

A sum of money is shared among eleven(11) people, so that the first get #75, the next #225, and so on.
(a) how much money does the eleventh person get
(b) how much is shared altogether

Answer 1

From what you have here, it seems that the preceding number is multiplied by 3. Looks like the 11th person gets a gigantic sum. I'll let you do the calculations.

Answer 2

or, the sequence is arithmetic, and grows by 150 for each person, so the 11th person gets 75 + 10*250 = 2575
S11 = 11/2 (75+2575) = _____