Gorang worked 412 hours on Monday, 190 minutes on Tuesday, from 5:20 a.m. to 9:10 a.m. on Wednesday, and 220 minutes on Friday. If he is paid ₹42 per hour, how much did he earn in total?

If P and Q together can complete a piece of work in 15 days and P alone can do it in 45 days, in how many days can Q alone complete that work?

A can lay a railway track between two stations in 16 days and B can do the same job in 12 days. With the help of C, they finished the job in 4 days. In how many days can C alone do the job?