Answer:
(a) Labor time variance = = $448 Unfavourable 
(b) Actual labor time variance = $832 Favourable 
(c) Labor rate variance = $1,600 Unfavourable 
(d) Labor time variance if another employee was hired =$448 Unfavourable 
Step-by-step explanation:
Given Data:
Standard quantity of output per hour per programmer = 25 lines 
Standard rate per hour = $32 
Budgeted output for first week in May = 4650 lines 
Actual output = 5650 lines 
Actual rate per hour = $40 
Standard hours for 4650 lines(4650/25) = 186 
Actual hours=5*40 = 200 
a. Calculating the labor time variance using the formula; 
Labor time variance = Standard rate*(Actual hour-Standard hour) =$32*(200-186) 
 = $448 Unfavourable 
 
b. Calculating the actual labor time variance using the formula;
Labor time variance = Standard rate*(Actual time-Standard time)
But, 
Standard time for 5650 lines = (5650/25) = 226 hours 
Therefore, 
Labor time variance = $32*(200-226)
 = $832 Favourable 
 
c. Calculating the labor rate variance using the formula; 
Labor rate variance = Actual hour*(Actual rate-Standard rate) 
Labor rate variance = 200*(40-32) 
 = $1,600 Unfavourable 
 
4. Calculating the labor time variance if another employee was hired , we have 
Actual labor time=6*40 = 240 
Actual labor rate = $32 
Labor time variance = Standard rate*(Actual hour -Standard hour) =$32*(240-226) 
 = $448 Unfavourable