HELP!!!!
  • HELP!!!!
Can you help explain why this equation is set up this way? I have the equation for a word problem
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.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
HELP!!!!
  • HELP!!!!
This is the word problem: Pipe a fills a pool in 5 hours and pipe b fills it in 8 hours. The drain empties the pool in 10 hours. If both pipes are turned on and then 45 minutes later the drain is opened, how long will it take to fill the pool form when the pipes were turned on?
HELP!!!!
  • HELP!!!!
The answer is x/5+x/8-(x/10-3/40)=1
HELP!!!!
  • HELP!!!!
Can you explain why is equation is set up this way? @dan815 @phi

Looking for something else?

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

More answers

HELP!!!!
  • HELP!!!!
@zepdrix
phi
  • phi
I start with the idea that rate * time = amount
phi
  • phi
Using that rate*time = amount idea, I try to figure out the "rate" For example, Pipe a fills a pool in 5 hours I translate that into rate= 1 pool/5 hours if we use that rate then in 5 hours we would have 1 pool/5 hours * 5 hours = 1 pool i.e. after filling for 5 hours at that rate we get 1 full pool. What is the rate for pipe B ?
HELP!!!!
  • HELP!!!!
Pipe B would take 1/8 or x/8 and the 1/10 to drain x/10
phi
  • phi
yes the rate for B is 1/8 (1 pool/ 8 hours) if we put in the units x is the unknown time in hours if we fill the pool for x hours and use both pipes the amount going in will be (1/5)*x + (1/8)*x ok so far?
HELP!!!!
  • HELP!!!!
yup
HELP!!!!
  • HELP!!!!
I'm confused on the x/10-3/40 part. I don't know how they got 3/40
phi
  • phi
at the same time water is going in, it is draining out at a rate of 1/10 but we don't start draining until 45 minutes after we start filling we change 45 minutes to 3/4 hour the time it is draining is (x- 3/4) ok ?
HELP!!!!
  • HELP!!!!
yup Im following
phi
  • phi
rate * time for draining is 1/10* (x-3/4) if you distribute the 1/10 you get x/10 - 3/40
phi
  • phi
of course draining means we use -1/10 for the rate, not +1/10 so the equation is x/5+x/8 - x/10 + 3/40 = 1 (pool)
HELP!!!!
  • HELP!!!!
Thanks for the step by step approach!!
phi
  • phi
yw

Looking for something else?

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