I need help on this question don't judge people I'm in 7th grade. Here's the question.

An object is traveling at a steady speed of 9 9/10km/h. How long will it take the object to travel 5 1/10km?

Someone please help me I'm really confused.

Guest Oct 18, 2019

edited by
Guest
Oct 18, 2019

#1**+3 **

*An object is traveling at a steady speed of 9 9/10km/h. How long will it take the object to travel 5 1/10km?*

Let's change the fractions to decimal fractions, just to make it easier.

An object is traveling at a steady speed of **9.9** km/h. How long will it take the object to travel **5.1** km?

The question asks how long, so you know the answer will be in hours.

Figure out how to **cancel units**, so that the answer will end up in hours.

You know to divide a fraction, you invert the divisor and multiply, so set it up like this

5**.**1 km 9.**.**9 km

___ ___ divided by ____ ___

1 1 1 hr

so that when you invert the divisor and multiply it becomes

5**.**1 ~~ km ~~ 1 hr 5**.**1 hr

___ ___ times ____ ___ = ____ = 0**.**515 hr

1 1 9**.**9 ~~ km ~~ 9**.**9

.

Guest Oct 18, 2019

#2