Question

MEDAL!

Answer 1

@Nnesha

Answer 2

This is actually just simple division :)
Speed in this scenario is measured by km/h "kilometers per hour"
So if she initially drove 500 km over the course of 5 hours, then that means that her speed was 500/5=10 km/hr!

Do the same thing for her return time! Also note that you will have to convert the 20 minutes to an hour and add to the 4.

Answer 3

Should I do:
\[\large \frac{500}{4 \frac{1}{3}}\]

Answer 4

Yep!! Assuming that you are considering that a mixed fraction and not mistakenly solving with 4/3 :)

Answer 5

So it would be something like:
\[\large \frac{ 1500 }{ 13 }\]
and then i would further divide it?

Answer 6

Yep! :)

Answer 7

It would be around 115.4 km/h.

Answer 8

That's what I got :) And this makes sense because if she returned faster than she got there, then she would have to travel faster than before!

Answer 9

But the answer key says that it's A.

Answer 10

Probably a typo!
They unit for speed is distance/time.
On the way there, 500/5=100km/hr
On the way back, 500/(13/3)=115.38hm/hr ~ 115.5

Answer 11

Maybe. Anyway, thank you!

Answer 12

You're welcome :)