Question

GIVE YOU A MEDAL!
Which set of equations would be used to solve this word problem?

Answer 1

An airplane flew 3.5 hours with a 40 mph head wind. The return trip with a tail wind of the same speed took 2.5 hours. Find the speed of the plane in still air.

Answer 2

An airplane flew 3.5 hours with a 40 mph head wind. The return trip with a tail wind of the same speed took 2.5 hours. Find the speed of the plane in still air
let speed in still air be x mph
..
speed with head wind = x-40
speed with tail wind = x+40
..
Distance = speed * time

Answer 3

Headwind distance = 3.5(x-40)
Tailwind distance = 2.5(x+40)
..
3.5(x-40) = 2.5(x+40)
3.5x-140=2.5x+100
x=140+100

Answer 4

add 140 and 1oo and u have ur answer

Answer 5

x= what mph speed of plane in still air?

Answer 6

140 + 100 = ???

Answer 7

d = 3.5(r + 40) and d = 2.5(r – 40)
d = 3.5(r – 40) and d = 2.5(r + 40)
d = 6(r + 40)
None of these systems can be used to solve this problem.

Answer 8

so its d

Answer 9

yait is d

Answer 10

thank you can you help me with another?

Answer 11

sure post it as another questino and and tag me! Dont forget to mark the best response!