What is the average age of stars in a barred-spiral galaxy?

The average age of stars in a barred spiral galaxy varies, but it typically ranges from a few million years for young, massive stars to several billion years for older stars. Many barred spiral galaxies contain a mix of stellar populations, with younger stars concentrated in the spiral arms and older stars found in the central bar and bulge. Overall, the average age can be around 3 to 10 billion years, depending on the specific galaxy and its star formation history.