Economics Question. Please answer ASAP! Will provide thumbs up!

Car's annual operating and maintenance (O&M) costs are given by the following schedule:

Year	Value
1	50
2	100
3	100
4	170
5	240

If MARR = 10%, and it is known that the value of O&M costs in the first year is the base annuity, define the value of parameter G in the equivalent arithmetic gradient series.

(Note: Don't use the $ sign in your answer and keep 2 decimal places)