anonymous
  • anonymous
help! how do figure this out A plane can fly 300 miles in the same time as it takes a cr to go 120 miles. If the car travels90 mph slower than the plane, find the speed of the plane
Mathematics
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

sandra
  • sandra
ah ok. so you have some pieces of information that you need to turn into an equation you can solve
sandra
  • sandra
I'll give it a shot
anonymous
  • anonymous
thanks

Looking for something else?

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

More answers

sandra
  • sandra
so we have two basic variables, the speed of the plane, and the speed of the car
sandra
  • sandra
since the plane goes 320 miles in the same time the car goes 120 miles, the plane's speed (p) in relation to the car's speed is 320/120
sandra
  • sandra
that is: 1. p = 320/120 c
sandra
  • sandra
the second piece of information is that the car travels 90 mph slower than the plane
sandra
  • sandra
2. c = p - 90
sandra
  • sandra
now that you have two equations, and two variables, you can solve via subsitution
sandra
  • sandra
so for our case, let's take the value of (c) from the second equation, and substitute it for the (c) in the first equation
sandra
  • sandra
1. p = 320/120 c , if c = p - 90, is the same as: 2. p = (320 x (p - 90))/120 3. p = 8(p - 90)/3 (reducing the fraction part) 4. p = 8p - 720/3 5. 3p = 8p - 720 6. 5p = 720 7. p = 144
sandra
  • sandra
so the plane travels 144mph

Looking for something else?

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