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.
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
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