Question

you work in an auto body shop. for the work - week just finished, you have the summary time sheet shown and need to find the overall efficiency. using the formula shown, what is the overall percent efficiency?

workshop staff	clock hours	task hours	billed hours
technician 2	42	35.0	44.1
technician 3	32	28.6	33.6
technician 4	38	42.7	40.5

overall percent efficiency = total billed hours ÷ total clock hours × 100
a 96.8%
b 103.3%
c 110.0%
d 238.6%
e 414.0%

Explanation:

Step1: Calculate total clock hours

$40 + 42+32 + 38=152$

Step2: Calculate total billed hours

$38.8+44.1 + 33.6+40.5 = 157$

Step3: Calculate overall percent efficiency

$\frac{157}{152}\times100\approx103.3\%$

Answer:

B. 103.3%