Question

Marlene is driving a boat of 180 mph for 3 hours from point a to point b. It took her 2 hours to go back from point b to point a. What is the speed of her going back to point a?

Answer 1

I guess they want you to think about

rate * time = distance (or speed * time = distance)

To use this equation, you need to know 2 of the 3 things.

First step, what is the distance between point a and point b ?
180 mph for 3 hours from point a to point b

use rate * time = distance

Answer 2

you have to notice that 180 mph is a speed and 3 hours is a time

Answer 3

so 180x3=d?

Answer 4

yes. and the answer will be in miles

Answer 5

240 miles is the answer for it?

Answer 6

is your calculator broken ?

Answer 7

oops I mean 540 I hit the wrong key.

Answer 8

ok. the distance between a and b is 540 miles. Common sense says it is 540 miles going from b back to a.

next, it says
It took her 2 hours to go back from point b to point a. What is the speed of her going back to point a?


2 hours to go back from point b to point a

which means 2 hours to go 540 miles (from b back to a)
can you find the speed using
speed* time = distance

Answer 9

540x2=d
2580?

Answer 10

I mean 1080 ^-^

Answer 11

does the equation say speed times distance ?

the way to do it is write down the equation
speed* time = distance

replace the 2 things you know: time and distance
what do you get ?

Answer 12

ohh ok now I get it

2/2s=540/2
s=270

is that correct?

Answer 13

yes, but I would write it
speed* time = distance
or
s * t = d
2 s = 540
then divide both sides by 2
2 s/2 = 540/2
s = 270

I don't like where you typed
2/2s=540/2

that should be 2s/2 = 540/2

Answer 14

oh ok sorry. Thank You for helping me!!

Answer 15

unless you meant (2/2) s = 540/2
which is ok

Answer 16

ur medal will be with u shortly ^-^

Answer 17

now just say

rate times time equals distance

3 times to yourself.

and you will be able to do these problems...