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Juan accepted a job to roof a new house He can complete the job in 20 hours His trainee takes 25 hours to complete the job How much time should the two of them working together need to roof the house?
It will take about 11.1 hours for the two of them to complete the roofing of the house.
If it takes 10 electricians to get the job done in 6 hours how many electrician will it take to complete the job in 4 hours?
It should take 15 electricians provided that two unlikely conditions are satisfied:all electricians work at exactly the same rate, andthe job contains no parts which are time-dependent. For example, if an instalment must be tested for 5 hours, then even infinitely many electricians will not do the job in 4 hours.
Worker A can complete a job in 20 hours and worker B can complete a job in 25 hours if both workers work together how long will it take them to complete the job?
The way to calculate this is to figure out what fraction each does in an hour (1/20 of the job, vs. 1/25 of the job). Add the fractions together to see how much they do together in an hour, then take the reciprocal to find out how many hours it takes them.
How many working minutes per day?
The usual working day is 8 hours (9 including breaks) (if you're lucky to get a job with the usual hours, usually public service here in ireland anyway). 8 hrs is 480 minutes.
A company has a machine that can complete a job in 6 hours A new machine can complete the job in 2 hours How long would it take the new machine to complete the job alone?
3 hours
