Mike and Peggy are digging holes for time capsules. Together

Last updated: 7/19/2022

Mike and Peggy are digging holes for time capsules. Together it take them 2.4 hours to dig a hole. If Mike can dig a hole by himself in 3.2 hours, how long would it take Peggy to dig the same hole? Only provide the numerical solution. The unit, hours, is not necessary.