4. Two marks exercise problems I

1. \(210\) men working \(12\) hours a day can finish a job in \(18\) days. How many men are required to finish the job in \(20\) days working \(14\) hours a day?

 

Number of men \(=\)

 

 

2. A cement factory makes \(7000\) cement bags in \(12\) days with the help of \(36\) machines. How many bags can be made in \(18\) days using \(24\) machines?

 

Number of cement bags \(=\)