Problema Solution
As part of her retirement savings plan, Patricia deposited $100 in a bank account during her first year in the workforce. During each subsequent year, she deposited $40 more than the previous year. Find how much she deposited during her twentieth year in the workforce. Find the total amount deposited in the twenty years
Answer provided by our tutors
solution:- at the beginning year Patricia deposited $100 in a bank account...i.e. let a1 = 100...then according to question she deposits the amount in next year is a2 = 140.. so a1 = 100 ; a2 = 140 ..a3 = 180...this forms a series of A.P. so, a20 = 100 + (20 - 1)40 = 100 +760 = 860$..answer..