Question

Please Help! An airplane travels 600 miles in the same amount of time that a car travels 200 miles. If the plane is travelling 120 mph faster than the car, find the car's speed

Answer 1

t=time

Answer 2

it's impossible without a time isnt it? oh god mr nalepa, the homework you give

Answer 3

distance/ speed= time

Answer 4

c= speed of the car
\[\frac{600}{120+c}=\frac{200}{c}\]

Answer 5

solve for c

Answer 6

oh thank you, i thought he was trying to make an impossible question cause we werent doing our hw

Answer 7

we can set them equal to each because the time it take is same for the car and the plane

Answer 8

oh, now i get it, thanks a bunch

Answer 9

so its equal to 200 over c or minus 200 over c?

Answer 10

+200

Answer 11

it is distance; can't be negative

Answer 12

wait now im confused

Answer 13

still confused?

Answer 14

yes, how do i solve it, do i cross multiply?
im not sure what that equation meant

Answer 15

\[\frac{Distance}{Speed}=Time\]

\[\frac{600}{120+c}=\frac{200}{c}\]

Answer 16

so do i cross multiply? ho do i solve it?

Answer 17

cross multiply to solve for c

600c=120*200+200c

Answer 18

okay, now i understand, thank you