A builder can build a rental toilet in 25 hours while a destroyer can demolish such a shop completely in 45 hours. Both the builder and the destroyer were initially set to work together on level ground. But after 30 hours, the destroyer was taken out. What was the total time taken to build the toilet?
1
41 hours 40 minutes
2
40 hours 15 minutes
3
42 hours 20 minutes
4
38 hours 30 minutes