It was estimated that 75 men could complete a piece of work in 20 days. When work was scheduled to commence, 25 men were sent to another project. How much longer will it take to complete the work?

Using the formula M1 times D1 equals M2 times D2, the total work remains constant, so 75 men times 20 days equals the remaining 50 men times the unknown days. Solving for the unknown gives 1500 divided by 50, which equals 30 days.

• Thanks
• Wrong explanation