Question

7.According to the terms of a contract, a contractor had to build a
house in 60 days, for which he engaged 45 men. After 40 days he
found that the work was getting delayed and therefore he engaged
30 additional men. He finished the job 5 days ahead of the schedule.
How many days behind time he would have been if he did not employ
additional men ?

Answer 1

Answer:

he took ten mens extra for building the house