Anyone please solve and explain.
A team of 30 sappers can build a temporary bridge in 45 days. After 15 days of work, 10 more sappers join the team, but due to harsh weather conditions, the overall efficiency of every worker drops by 20%. After another 10 days, 5 sappers are reassigned, and the weather clears, returning efficiency to normal. Find the total time taken to complete the bridge?
No answers have been posted yet. The first helpful reply can set the tone for the whole thread.
Reply
Add a helpful answer.
You need a free Cadet Club account to answer community doubts.