Question

A car travels a distance of 210 miles in a time of 3.2 hours.
What is its average speed rounded to 1dp?

Answer 1

Given,

Distance car travels is $210$ miles.

Time taken by the car = $3.2$ hours

To find,

Average speed of car rounded up to 1 decimal point.

Solution,

The data given in the question needs to be converted into kilometers and seconds.

$1$ mile = $1.609$km

$1$ hour = $3600$sec

Now, $210$ miles = $337.89$km = $337890$m

        $3.2$ hours = $11520$s

Average speed = total distance travelled/ total time taken = $\frac{d}{t}$.

                          = $= \frac{337890m}{1152s}\\= 293.307m/s$

Rounding off to one decimal place, average speed = $293.3m/s$

Therefore, the average speed after rounding off to one decimal place is $293.3m/s$.

Answer 2

the answer is 3264.7