Question

The average speed of a car is \[35km/hr\]. How far can it travel in \[45\] minutes?

Answer 1

Hint: From the question given, the average speed of a car is \[35km/hr\] and asked to find how far it can travel in \[45\]minutes. We can solve the above given question by using some basic formula and also we have to convert the units to get the full problem in a single note.

Complete step by step answer:
From the question given, we have been given that the average speed of a car is \[35km/hr\].
We can clearly observe that the speed of the car has the hour as the unit of measure.
So, to get the final answer in hours, we have to convert \[45\] minutes into hours.
Conversion of \[45\]minutes into hours:
We all know that one hour has \[60\]minutes.
So \[45\]Minutes will become as \[\Rightarrow \dfrac{45}{60}\] hours.
You can treat the units of measurement the same way you do the numbers.
We have one basic formula to calculate the distance travelled. Formula is shown below,
$\text{Distance = speed }\!\!\times\!\!\text{ time}$
By using the above formula, we can solve the given question.
Therefore, the distance travelled is
\[\Rightarrow 35km/hr\times \dfrac{45}{60}h\]
\[\Rightarrow \left( 35\times \dfrac{45}{60} \right)km\]
Simplify further to get the accurate answer. On simplifying further we get, \[\Rightarrow 26.25km\]

Therefore the distance travelled is \[26.25km\Rightarrow 26\dfrac{1}{4}km\]

Note: We should read the question twice or thrice and have to understand the question very clearly. After understanding the question, we should get the units of all the measurements the same so that it will be easy to get the final answer for the given question. Also, we should be very careful while doing the calculation part. Similarly we can find the distance travelled by the car having average speed $35km/hr$ in $30$ minutes will be $\dfrac{35}{2}=17\dfrac{1}{2}km=17.5km$