Category: Writing

1. A contractor hired three plumbers to work nine hours per
day for five days and two laborers to work seven hours for one day. What was the
total number of hours worked?
2. How many bundles of shingles are needed to cover a
two-part roof if one part is 400 square feet and the other part is 600 square
feet? It takes three bundles of shingles to cover 100 square feet.

1. A lighting circuit can supply 1,200 watts of incandescent
light. How many 150-watt fixtures can it support?
2. A carpenter cuts four pieces of weather stripping from a
roll 180 inches long. How much weather stripping remains on the roll if the
pieces were 40 inches, 40 inches, 34 inches, and 34 inches long?

1. How many fixtures requiring 4 LED lamps each can be
supplied from a case of 24 LED lamps?
2. How many 4-foot pieces can be cut from a 12- foot 2 × 4?
3. If one person can apply 300 square feet of insulation per
hour, how long will it take that person to apply 3,300 square feet of
insulation?

1. What is the total length of 24 pieces of door casing if
each piece is 7 feet long?
2. If you work 37 hours at $12 per hour, what should your
pay be?
3. If you need to make electrical connections in 27 boxes
and each box requires 3 wire nuts, how many wire nuts do you need?

Pipe is made in many weights, the most common being schedule
40, schedule 80, and schedule 120. Figure 7-7 shows the inside diameters of
1-inch pipe. (“Nominal” means it is sold as 1-inch pipe although its actual
size may be different.) What is the difference in the inside diameter of 1-inch
schedule 40 pipe and 1-inch schedule 80 pipe?
Figure 7-7

Find missing dimension A in Figure 6-4.

1. What is the cost of 1,450 feet of BX cable if it sells
for $0.675 per foot?
2. If a truck uses 0.2 gallon per mile and diesel fuel costs
$3.159 per gallon, what does it cost to drive the truck 13,215 miles?

1. Working from a 500-foot coil of electrical cable, an
electrician uses 46 feet, 41 feet, 28 feet, 14 feet, 27 feet, and 19 feet. How
much cable remains on the coil?
2. A sling rated for 1,500 pounds is used to hoist a
536-pound air conditioner into place. What is the margin of safety for the
sling?

1. Resistance decreases in proportion to
diameter Resistance increases in proportion with length. What is the
resistance of a 150 feet of 12 AWG copper wire if the resistance is 1.588 ohms
per thousand feet?
2. A certain size of lumber costs $1.15 per board foot. What
is the cost of 50.5 board feet of that lumber?