Question

It took Nora 36 hours to drive from Houston to Los Angeles. If the distance covered is 1,600 miles, what was Nora’s average speed in km per hour?

You have to convert miles to km right? How?

Answer 1

1600/36 = ?

Answer 2

1m = 1.6 km.
So, multiply that number by 1.6

Answer 3

Which number?

Answer 4

1600/36 times 1.6

Answer 5

Got it?

Answer 6

I remeber doing something like :

1600 miles * 1km
-------- =
1000miles

or something similar ( i just can't remeber very well :( ) ^ Is this right?

Answer 7

71 km/hr.

Answer 8

GTTTTT! please tell me if it's right or wrong

Answer 9

yup it is right

Answer 10

So it becomes 1.6 km?

Answer 11

nope 71

Answer 12

km/hr

Answer 13

convert 1m=1.6km

Answer 14

just cross multiply

Answer 15

No wait...

Answer 16

I mean by 1.6 km when you convert

Answer 17

not the final answer

Answer 18

or

Answer 19

71 is when you convert 1600miles to km?

Answer 20

\[\Large \frac{1600 miles}{36 hours} \times \frac{1.6 km}{1 miles}=\frac{2560km}{36hours}\]

Answer 21

YUUPPPP! This one :D

Answer 22

But can you just tell me what you did exactly? Please :)

Answer 23

It's a conversion factor. we know that there are 1.6km in a mile so you multiply the 1600 miles by 1.6km per 1mile the miles cancel out leaving 1600 miles times 1.6km the time portion is still in hours distance/time = rate

Answer 24

\[\Large 1.6km = 1mile\]
divide both sides by 1 mile
\[\Large \frac{1.6km}{1mile}\]

Answer 25

Okay so you did this:

1600 miles *1km/1000 miles = 1.6 km

d=r*t

t=36 hrs d= 1.6 km r= ?

r= d/t

r= 1.6/36
r=2/45

??

ok i think i'm lost :(

Answer 26

It took Nora 36 hours to drive from Houston to Los Angeles. If the distance covered is 1,600 miles, what was Nora’s average speed in km per hour?

Where are you getting the 1km/1000 miles?
1km does not equal 1000 miles
1km = 0.62 miles
or
1mile = 1.6km

Answer 27

Ohhh! Okay Thankss :)