A patrol boat took 2.5 h for a round trip 12 km upriver and 12 km back. The speed of the current was 2 km/h. What was the speed of
the boat in still water?

water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

hope this < 3

i dont get the question

step-by-step explanation:

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94