Solve for the equilibrium

…the Romney campaign went up with an ad just days after the Ryan pick, hitting Obama on the $716 billion figure.

“You paid into Medicare for years: every paycheck. Now, when you need it, Obama has cut $716 billion dollars from Medicare. Why? To pay for Obamacare,” the ad says. “The Romney-Ryan plan protects Medicare benefits for today’s seniors and strengthens the plan for the next generation.”

How the GOP ticket talks about Medicare is vitally important in Florida in particular, a competitive swing state with a high retirement-age population. Ryan is visiting the state for the first time today since he was named to the ticket, and will go to The Villages — billed as the largest retirement community in the world — with his mom.

But instead of wading into the policy details with which Ryan is most comfortable, Republican strategists said it would be far smarter for the Wisconsin lawmaker to focus on the Obama move to remove money from the Medicare trust fund and portray Republicans as the program’s savior.

The article is here. You can try a second exercise, called “Solve for the Equilibrium Ten Years from Now.”