A motor boat travels 180 miles in 5 hours going upstream. It travels 260 miles going down stream in the same amount of time. What is the rate of the boat in still water a and what is the rate of the current . Is there anyone out there that can help ?

boat: 44 mphcurrent: 8 mph

Step-by-step explanation:

The average speed upstream is ...

  speed = distance/time

  upstream speed = (180 mi)/(5 h) = 36 mi/h

The average speed downstream is ...

  downstream speed = (260 mi)/(5 h) = 52 mi/h

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The upstream speed is the difference between the speed of the boat (b) and that of the current (c):

  36 = b - c

Likewise, the downstream speed is the sum of those of boat and current:

  52 = b +c

Adding these equations gives ...

  88 = 2b

  44 = b

Then the speed of the current is ...

  c = b -36 = 44 -36 = 8

The boat's speed in still water is 44 mi/h; the current's speed is 8 mi/h.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

Ibelieve the answer is c