How do you calculate the cost flow for inventory using LIFO?

I don't know what you're asking because using LIFO and cash flow aren't related. LIFO is just a method used for deciding what cost to use when you actually sell something. That has nothing to do with how much cash flow you actually had in the way of payments.

It would be helpful if this were put into context, because as is, I'm not sure what you're trying to refer to.

What is the income for 'Farrence Company if it purchased 1000 5%,10/ @102 and 500 6.5 10 at 98

The following investments were made by the Farrence Company a. purchased a $1000, 5%, 10-yr, bond at 102 and a 5000 6.5% ,10yr bond at 98
What is the total income earned by company for bond in b. and the amount of interest income to be reported annually for a.

Please always start your own thread for your question instead of tagging onto someone else's. (Especially when it has nothing to do with the other post.) And then also read our guidelines on posting homework questions:
Ask Me Help Desk - Announcements in Forum : Homework Help (https://www.askmehelpdesk.com/finance-accounting/announcement-font-color-ff0000-u-b-read-first-expectations-homework-help-board-b-u-font.html)