math problem, with two crews could complete the work within 24 days
Working together, the two crews could complete the work within 24 days. But first he works alone for 4 days and the next six days and so they achieved only 20% of the work. How many days will be required of the second to finish working alone?
RE: math problem, with two crews could complete the work within 24 days
If each team would work six times more (ie 24 days the first team and the second 36 days) would perform 120% of the work.
We know that by working both cite 24 days would make the whole work (100%).
It follows that the second team in 12 days 20% of the work done.
As the work remaining 80%, the second team needs 48 days.