anonymous
  • anonymous
a boat moves 6 kilometers upstream in the smae amount of time it moves 20 kilometers downstream. if the rate of the current is 5 kilometers per hour, find the rate of the boat in still water. a. 9 2/7 kilometers per hour b. 2 1/7 kilometers per hour c. 9 2/7 kilometers per hour d. 8 4/7 kilometers per hour
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
amistre64
  • amistre64
s = d/t s = 6/t and s = 20/t
amistre64
  • amistre64
b + r = 20/t b - r = 6/t might be a better scenario....
amistre64
  • amistre64
b + 5 = 20 b - 5 = 6 b = 25 and b = 11 25x = 11x ?? cant be right... :) close, but not right

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
d = rt 6 = (x - 5)t for the upstream 20 = (x + 5)t for downstream Solve both for t 6/(x - 5) and 20/(x + 5) Since the time is the same, put these equal to each other 6/(x - 5) = 20(x + 5) cross multiply 6(x + 5) = 20(x - 5) distribute 6x + 30 = 20x - 100 Solve 130 = 14x x = 130/14 = 65/7 = 9 2/7 kph

Looking for something else?

Not the answer you are looking for? Search for more explanations.