Calculating normal and standard time for a task

Peter Rourke, a loan processor at Wentworth Bank, has been timed performing four work elements, with the results shown in the following table. The allowances for tasks such as tis are personal. 7%; fatigue, 10%; and delay, 3%

TASK PERFORMANCE OBSERVATIONS (MINUTES)
ELEMENT RATING (%) 1 2 3 4 5

1 110 5 4 6 4 4
2 95 6 8 7 6 7
3 90 6 4 7 5 5
4 85 1.5 1.8 2.0 1.7 1.5

a) What is the normal time?
b) What is the standard time?