Answer:
a. 150 hours
b. 24.2 hours
Explanation:
Given
Motor tune-up
Standard Hours 2.5
Standard Rate $25.00
Standard Cost $62.50
Labor rate variance $ 150 F
Labor spending variance $ 200 U
Tuneups = 50
a.
Efficiency Variance = Labor Rate Variance + Labor Spending Variance
Efficiency Variance = 150 + 200 = 350
Total Standard Rate = Standard Rate * Actual Hours
Total Standard Rate = 25 * AH
Total Standard Hours = Standard Hours * Turn ups
Total Standard Hours = 2.5 * 50= 150
Efficiency Variance = Standard Rate (Actual Hours - Total Standard Hours)
350 = 25 (AH - 150)
14 = AH - 150
AH = 150 + 14
AH = 164 hours
b.
Rate Variance = AH (Actual Rate - Standard Rate)
Where AH = 164
Actual Rate = ?
Standard Rate = 25
Rate Variance = -150 ---- Given
So
-150 = 164(AR -25)
-150/164 = AR - 25
AR = 25 - 150/164
AR = 3950/164
AR = 24.08537 ---
AR = 24.1 --- Approximated