Hello
Mr. Ryan saved for a total of 65 - 36 years
[tex]65-36=29[/tex]Mr. Ryan saved for a total of 29 years. In that 29 years he saved for a total of 348 months.
[tex]29\times12=348[/tex]for the total of 348 months, he saved a total of 400 * 348
[tex]400\times348=139200[/tex]