Perform related computations-(Basic)

Mr. Green, who is an electrician, works 2 hours 20 minutes on Monday, 5 hours 45 minutes on Tuesday and 3 hours 50 minutes on Thursday. what is the total number of hours worked?

• 11 hours and 55 minutes

• 10 hours and 50 minutes

• 12 hours and 45 minutes

• 15 hours and 55 minutes

Miss Wynter who is a labourer works 2 hours 20 minutes on Friday, 5 hourrs 45 minutes on Saturday. Give total hours worked

• 12 hours

• 12 1/2 hours

• 8 hours 5 minutes

• 21 hours

What is the total cost os 25 welding rods at $35.60 each?

• $525.60

• $534.60

• $890.00

• $3, 560.00

What is the wall thickness of a pipe with an external diameter of 149mm and an internal diameter of 98 mm?

• 247 mm

• 151 mm

• 51 mm

• 25.5 mm

A mechanic started a job at 8.37 am. It took him 4 hours and 35 minutes to complete it. What time did he finish?

• 12:12 pm

• 12:48 pm

• 1:12 pm

• 1:48 pm

Five pieces measuring 26, 47, 38, 27,and 32cm are cut from steel bar that was 200 cm long. Allowing for a total of 1 cm for waste in cutting, what is the length of the piece remaining?

• 20 cm

• 29cm

• 30 cm

• 39 cm

A contractor brought a new piece of machinery for $ 1, 380.00 and at the end of 2 1/2 months sold it for $ 2, 590.00. How much profit did he make?

• $1,036.00

• $1,210.00

• $3,025.00

• $3,450.00

If a 0.254 m diameter electrical conduit is to be 6.191 m with a tolerance of = 0.318 . Find the longest and shortest acceptable lengths.

• 6.509 m and 5.874 m

• 6.477m and 5.906 m

• 6.445 m and 5.937 m

• 6.541 m and 5.889 m

How long will it takes to weld 45 pins if each pin requires 6 1/4 minutes for welding ? (Allow i minute per pin for placing in a jig.

• 658 3/4 min.

• 348 3/4 min.

• 303 3/4 min.

• 258 3/4 min

Find the lengths marked on the following rule below:

• 5/8m, 17/8 m, 2 1/2m, and 3m

• 3/8m, 1 3/4m, 2 3/8m, and 3m

• 3/8m, 1 7/8m, 2 3/8m, and 3m

• 5/8m, 1 3/4m, 2 1/2m, and 3m