If 446437 passengers travel everyday through Kingston airport, 967989 passengers travel through Montego Bay airport, 477791 passengers travel through airport and 921020 passengers travel through airport, how many total passengers will travel through these four cities everyday?

There are 21 employees in a post-office, who work in three shifts. The first group of 7 employees work from 10:00 AM to 02:00 PM. The second group of 6 employees work from 12:00 PM to 04:00 PM. The third group of 8 employees work from 02:00 PM to 04:00 PM. If there are only 8 computers, during what time are the computers likely to be used most?

Satchell's income is 30% less than Claire's income, Serena's income is 20% less than Satchell's income, and Jordan's income is 30% less than Satchell's income. If Claire gave 70% of his income to Serena and 30% of his income to Jordan, Serena's new income would be what fraction of Jordan's new income?