Veer can do a piece of work in 40 days and Sameer can do the same work in 80days. Veer alone starts work and worked for 22 1 2 days then Sameer alone worked for next 15 days. If the remaining work is completed by Veer and Satish on alternate days with Veer starts the work in 12 days. Then find in how many days will be required to complete work if all three works together?