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Optics and lenses

Hi. can someone please show me how to do the following problem? Thank you.

"With unaided vision, a librarian can focus only on objects that lie at distances between 6.0 m and 0.37 m. Find the refractive power needed for each part of the bifocal eyeglass lenses (1. for the converging lens and 2. for the diverging lens) that will give the librarian normal visual acuity from 25 cm out to infinity. Assume the lenses rest 2.0 cm from his eyes."

Solution Summary

The solution provides explanations and step-by-step calculations for finding the refractive power needed in eyeglasses with different lenses.