Forum - Arithmetics

math problem, with two crews could complete the work within 24 days

caesare
Visitor
2016-05-31 15:47:07
#1
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

teacherMasa
Visitor
2016-05-31 15:48:06
#2
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.
 
 

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