Management in Construction - Estimating

Consder a certan activity withn your project with a quantity of 1650m2 Use the following data to estmate the activity duration and cost (Including O\&P) You plan NOT to use the crew D 7 rather a larger crew of 2 workers and 1 helper to speed the job it is noted that using local labor the bare hourly rates for a worker and a helper are $30 and $25 respectively Material cost is also increased 20%