Directions: Read the following information carefully and answer the questions based on it.

Saturday:- The speed of the downstream is 50% more than the speed of the upstream. If the downstream speed is increased by 10km/h, then the boat takes 5 hours to cover 200 km.

Sunday:- The speed of the current is one-fourth of the speed of the boat. Time taken to cover 180 km along the stream is 6 hours.

Monday:- The speed of the downstream is 100% more than the speed of the upstream. Time taken to cover 280 km along the stream in 7 hours.

Tuesday:- The speed of the current is one-third of the speed of the boat. The difference between the downstream speed and upstream speed is 10 km/h.

Wednesday:- The speed of the current is 20km/h, which is half of the speed of the boat.