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Practical Problems in Mathematics for Heating and Cooling Technicians
Exam 40: Estimates and Bills
Path 4
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Question 1
True/False
It the total cost of parts is $326.50 and there is a 4% sales tax, the amount added to the bill for tax is $12.86.
Question 2
Short Answer
Use the following information for problems . An oil burner needs repair. The technician replaces the parts listed:
a. 1 gun nozzle
$
9.85
b. 20 feet of 3/8-inch copper fuel line.
$
0.82
per foot
c. 1 fuel filter
$
7.45
d. 1 new oil pump
$
54.70
e. 2 pair oil gun electrodes
$
2.60
for each pair
f. Labor (4 1/2 hours)
$
13.50
per hour
\begin{array}{ll} \text {a. 1 gun nozzle } &\$ 9.85 \\\text {b. 20 feet of 3/8-inch copper fuel line. } &\$ 0.82 \text { per foot } \\\text {c. 1 fuel filter } & \$ 7.45 \\\text {d. 1 new oil pump} & \$ 54.70 \\\text {e. 2 pair oil gun electrodes} &\$ 2.60 \text { for each pair } \\\text {f. Labor (4 1/2 hours)} & \$ 13.50 \text { per hour }\end{array}
a. 1 gun nozzle
b. 20 feet of 3/8-inch copper fuel line.
c. 1 fuel filter
d. 1 new oil pump
e. 2 pair oil gun electrodes
f. Labor (4 1/2 hours)
$9.85
$0.82
per foot
$7.45
$54.70
$2.60
for each pair
$13.50
per hour
-What is the cost of labor to repair the oil burner?
Question 3
Short Answer
Use the following information for problems . An oil burner needs repair. The technician replaces the parts listed:
a. 1 gun nozzle
$
9.85
b. 20 feet of 3/8-inch copper fuel line.
$
0.82
per foot
c. 1 fuel filter
$
7.45
d. 1 new oil pump
$
54.70
e. 2 pair oil gun electrodes
$
2.60
for each pair
f. Labor (4 1/2 hours)
$
13.50
per hour
\begin{array}{ll} \text {a. 1 gun nozzle } &\$ 9.85 \\\text {b. 20 feet of 3/8-inch copper fuel line. } &\$ 0.82 \text { per foot } \\\text {c. 1 fuel filter } & \$ 7.45 \\\text {d. 1 new oil pump} & \$ 54.70 \\\text {e. 2 pair oil gun electrodes} &\$ 2.60 \text { for each pair } \\\text {f. Labor (4 1/2 hours)} & \$ 13.50 \text { per hour }\end{array}
a. 1 gun nozzle
b. 20 feet of 3/8-inch copper fuel line.
c. 1 fuel filter
d. 1 new oil pump
e. 2 pair oil gun electrodes
f. Labor (4 1/2 hours)
$9.85
$0.82
per foot
$7.45
$54.70
$2.60
for each pair
$13.50
per hour
-If a rebuilt oil pump costs $28.50 and takes 2 hours to install. What is the cost of parts and labor if the rebuilt pump is used?
Question 4
Short Answer
Use the following information for problems . An oil burner needs repair. The technician replaces the parts listed:
a. 1 gun nozzle
$
9.85
b. 20 feet of 3/8-inch copper fuel line.
$
0.82
per foot
c. 1 fuel filter
$
7.45
d. 1 new oil pump
$
54.70
e. 2 pair oil gun electrodes
$
2.60
for each pair
f. Labor (4 1/2 hours)
$
13.50
per hour
\begin{array}{ll} \text {a. 1 gun nozzle } &\$ 9.85 \\\text {b. 20 feet of 3/8-inch copper fuel line. } &\$ 0.82 \text { per foot } \\\text {c. 1 fuel filter } & \$ 7.45 \\\text {d. 1 new oil pump} & \$ 54.70 \\\text {e. 2 pair oil gun electrodes} &\$ 2.60 \text { for each pair } \\\text {f. Labor (4 1/2 hours)} & \$ 13.50 \text { per hour }\end{array}
a. 1 gun nozzle
b. 20 feet of 3/8-inch copper fuel line.
c. 1 fuel filter
d. 1 new oil pump
e. 2 pair oil gun electrodes
f. Labor (4 1/2 hours)
$9.85
$0.82
per foot
$7.45
$54.70
$2.60
for each pair
$13.50
per hour
-Using the original bill, if the customer pays the bill within 45 days, an 8% discount is given on parts and labor. What would be the cost of the estimate if the customer pays within the 45 day period (include a 6% tax on parts after the 8% discount)?
Question 5
Short Answer
Use the following information for problems . An oil burner needs repair. The technician replaces the parts listed:
a. 1 gun nozzle
$
9.85
b. 20 feet of 3/8-inch copper fuel line.
$
0.82
per foot
c. 1 fuel filter
$
7.45
d. 1 new oil pump
$
54.70
e. 2 pair oil gun electrodes
$
2.60
for each pair
f. Labor (4 1/2 hours)
$
13.50
per hour
\begin{array}{ll} \text {a. 1 gun nozzle } &\$ 9.85 \\\text {b. 20 feet of 3/8-inch copper fuel line. } &\$ 0.82 \text { per foot } \\\text {c. 1 fuel filter } & \$ 7.45 \\\text {d. 1 new oil pump} & \$ 54.70 \\\text {e. 2 pair oil gun electrodes} &\$ 2.60 \text { for each pair } \\\text {f. Labor (4 1/2 hours)} & \$ 13.50 \text { per hour }\end{array}
a. 1 gun nozzle
b. 20 feet of 3/8-inch copper fuel line.
c. 1 fuel filter
d. 1 new oil pump
e. 2 pair oil gun electrodes
f. Labor (4 1/2 hours)
$9.85
$0.82
per foot
$7.45
$54.70
$2.60
for each pair
$13.50
per hour
-Using the original estimate, if the customer pays the bill within 30 days, a 10% discount is given on parts and labor. What is the discount if the customer pays within 30 days?
Question 6
Short Answer
Use the following information for problems . An oil burner needs repair. The technician replaces the parts listed:
a. 1 gun nozzle
$
9.85
b. 20 feet of 3/8-inch copper fuel line.
$
0.82
per foot
c. 1 fuel filter
$
7.45
d. 1 new oil pump
$
54.70
e. 2 pair oil gun electrodes
$
2.60
for each pair
f. Labor (4 1/2 hours)
$
13.50
per hour
\begin{array}{ll} \text {a. 1 gun nozzle } &\$ 9.85 \\\text {b. 20 feet of 3/8-inch copper fuel line. } &\$ 0.82 \text { per foot } \\\text {c. 1 fuel filter } & \$ 7.45 \\\text {d. 1 new oil pump} & \$ 54.70 \\\text {e. 2 pair oil gun electrodes} &\$ 2.60 \text { for each pair } \\\text {f. Labor (4 1/2 hours)} & \$ 13.50 \text { per hour }\end{array}
a. 1 gun nozzle
b. 20 feet of 3/8-inch copper fuel line.
c. 1 fuel filter
d. 1 new oil pump
e. 2 pair oil gun electrodes
f. Labor (4 1/2 hours)
$9.85
$0.82
per foot
$7.45
$54.70
$2.60
for each pair
$13.50
per hour
-Using the original bill, if there was a 15% increase in the price of the oil pump what would be the new cost of the parts?
Question 7
Short Answer
Use the following information for problems . An oil burner needs repair. The technician replaces the parts listed:
a. 1 gun nozzle
$
9.85
b. 20 feet of 3/8-inch copper fuel line.
$
0.82
per foot
c. 1 fuel filter
$
7.45
d. 1 new oil pump
$
54.70
e. 2 pair oil gun electrodes
$
2.60
for each pair
f. Labor (4 1/2 hours)
$
13.50
per hour
\begin{array}{ll} \text {a. 1 gun nozzle } &\$ 9.85 \\\text {b. 20 feet of 3/8-inch copper fuel line. } &\$ 0.82 \text { per foot } \\\text {c. 1 fuel filter } & \$ 7.45 \\\text {d. 1 new oil pump} & \$ 54.70 \\\text {e. 2 pair oil gun electrodes} &\$ 2.60 \text { for each pair } \\\text {f. Labor (4 1/2 hours)} & \$ 13.50 \text { per hour }\end{array}
a. 1 gun nozzle
b. 20 feet of 3/8-inch copper fuel line.
c. 1 fuel filter
d. 1 new oil pump
e. 2 pair oil gun electrodes
f. Labor (4 1/2 hours)
$9.85
$0.82
per foot
$7.45
$54.70
$2.60
for each pair
$13.50
per hour
-Including the 6% tax on parts, what is the total cost of the estimate?
Question 8
True/False
Bills are used for a number of reasons including providing a record of what inventory was used, to provide a record for how much time workers spent on various jobs, and to provide customers with a record of what pieces were replaced.