Front end, Middleware and Backend three teams are working on a project. Each story touches all three teams. How to calculate a combined velocity of the teams so we can predict the delivery of some features.
In order to calculate combined velocity, you need to know the total amount of time that each team is spending on the story, as well as how much work they are producing per hour. Then, you can divide this number by the number of hours in a day, and multiply this figure by 100 to get your combined velocity.