A crew team took 40 minutes to row 4 km up the river. It took them 30 minutes to row back the same distance in the direction of the current. Everyone rowed with the same intensity both ways. What is the speed of the current measured in km per hour?

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.

The mean average cost of standard room per night at a hostel is ? 20.60. therefore, how much does a standard room cost per night at night-time rest days?