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?

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.

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.

Find the lengths marked on the following rule below:

There are fifteen 100-watt bulbs on the Main Street. How many kilowatts are used in one hour when all the lights are on? Given: 000 watts= 1 kilowatt

The Ace Welding Company advertises that one of its welders can weld two (2) fifty gallon mild steel containers per hour. How many such containers can 27 welders weld if they work 45 hours each?

A line 0.5cm long represents 1 metre on a drawing. How many metres are represented by a line 0.85cm long?

A worker purchased tools amounting to $865.00. If he received a 10% discount, how much did he pay?

In preparing an estimate for an installation, a plumber assumes a 15% waste factor. If the finished job contains 1230 sq ft of piping, how many feet of pipe should the plumber order?

An electrician charges $23, 200 to wire four studio apartments. How many should he receive for wiring 10 similar studio apartments?

The electricity from a power plant was distributed in the ratio 2:8 between the rural and urban areas respectively. How many power went to the rural districts if 15,400 MW was produced?

The profit from a business partnership is shared in the ratio of 5:7 for Mr. Brown and Mr. Black respectively. If the profit made was $4, 400 then Mr. Brown will receive.

Two lengths of conduits are in the ratio 8:5 respectively.If the first length is 120.0m, what is the second length?

Find the power P (in watts) used in an electrical light bulb. P= 12R, if the current 1=0.80 ampere and he resistance R=150 ohms.