Airline ticket states that the flight takes two hours and 45 minutes flight home is actually two hours and 54 minutes what is the percent error in the flight time

Answer: approximately 5.1724%

Work Shown:

2 hrs, 45 min = 120 min + 45 min = 165 min

2 hrs, 54 min = 120 min + 54 min = 174 min

A = estimated value = 165

B = true value = 174

C = percent error

C = 100 * (|A - B|) / B

C = 100 * (|165-174|) / 174

C = 100 * (| - 9 |) / 174

C = 100*9/174

C = 900/174

C = 5.1724% which is approximate

5.1724%