Two friends were to sawe for their retirement fund. Jenna saves on irregular terms, whenever she has excess money. She made deposits of P10,000 on the first year, P30,000 on the fourth year, P50,000 on the sth year, and P75,000 on the tenth year. Sherry on the other hand wants to be disciplined with her deposits, and wants to have equal annual deposits. If Sherry will only make her annual deposits for 6 years, how much should it be that will match Jenna's worth at the 20th year, if the interest is 10% per year?