# How Do You Calculate Time When You Know The Distance And Speed?

## 15 Answers

Distance, speed and time are related by a simple linear equation, distance (d) = speed (s) multiplied by time (t). If given any two of the variables, you can solve for the missing third variable, using one step of algebraic manipulation if necessary.

There can be many different units for each of these variables and to apply the equation correctly, the units of the variables must correspond correctly. For instance, if distance is given in miles and time in hours, then the speed must be in miles per hour.

Firstly make sure your units for distance and speed correspond correctly. If not, convert your units. For example, if your distance is in metres but your speed in kilometres per hour, you should convert your distance into units of kilometres.

The basic linear equation that relates distance, speed and time is given by D = S X T, where D stands for distance, S stands for speed, and T stands for time. Plug in the given values for distance and speed, using the appropriate units.

Divide both sides of the equation by the rate. The resulting value on the left side of the equation will be time, given in the same units as the time element of your speed.
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Alishan Samdani answered
The formula for Time is simple if you know the distance and the speed of an object in motion.
Speed = Distance / Time
Therefore we can solve it to bring the equation in terms of Time;
Time = Distance / Speed
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Anonymous answered
Distance divided by speed = time
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Michael McGowan answered
To calculate for distance, time or speed, you need to know at least two of the factors: So for distance, (d=sxt); for time, (t=d/s) and for speed, also referred to as rate, (s=d/t)
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Anonymous commented
The way my physics teacher at school told me to do a calculation of this kind was to remember this visual pyramid (its not great as I've had to type it out):
^
___Distance___
Speed X Time

Then, when you have a missing value, you just need to do what the pyramid says. So if you have the values for speed and time, then as they are next to each other on the pyramid, you times them together:
^
____????____
Speed X Time

= Speed X Time = Distance

And if you have one of the lower values missing, then you divide top by bottom:

^
___Distance___
???? X Time

= distance/time = speed

Or:
^
___Distance___
Speed X ????

= Distance/Speed = Time

All you really have to remember then is that distance has to be on top of the pyramid, and that you either divide or times depending on what values you have at hand.

Hope this helps!!
Anonymous answered
Speed=distance/time
suppose distance is 424 miles and .. Time is 9 hours .
So you do 424 divided by 9
which is
47.11111111111111.... Speed miles per hour !!
The answer is ...... 47 m/h
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Think Again answered
We know velocity=distance / time.
So,Time=distance / velocity.
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Anonymous answered
Time = 350miles/70mph
Time = 5hrs
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Anonymous answered
*Time distance calculations*  (Rate = Speed)

Rate = Distance / Time
Time = Distance / Rate
Distance = Rate x Time
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Anonymous answered
Iv got near enough same question:
IF your going 70mph for 350 miles how long will it take to finish the 350 miles?
Please explain this for  child which III am :)  because I got to do this 4 my home work and I have to explain in details how would you calculate it
:D not so  great though lol

please. It has 2 be done by 2moz....
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Harjot Rai answered
T=time d=distance =v=velocity
The formula for time is t=d/v.

For example if someone travels south for 230km going at a constant speed of 120km/h, the equation would look like this : T=(230km)/(120km/h) t=1.9166... Therefore it took 1.9 hrs. MAKE SURE YOUR UNITS ARE THE SAME
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Anonymous answered
Definition of speed distance and time
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Anonymous answered
Speed is distance over time use the triangle
_D_
S x T

So distance is speed x time
speed is distance divided by time
time is distance divided by speed
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Anonymous answered
If two planes leave the same airport at 1:00pm, how many miles apart will they be at 3:00 pm if one travels directly north at 150mph and the other travels directly west at 200 mph?
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Anonymous answered
It doesnt matter if distance is in miles or feet??
Does it matter if time is in seconds, or minutes, or hours??
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Anonymous answered
Two trains200mts&150mts are running on the parallel rails at this rate of 40km/hr & 45km/hr in how many time will they cross each other if they are running in same direction.
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