Question

A car takes 3 hours to cover a distance of 180km . If the distance is to be covered in 2 1/2 hours , the speed of the car n km/ hr should be

Answer 1

Answer:

Distance =speed/time

=180/3

Answer 2

Answer:

Speed of the car is 72km/hr.

Step-by-step explanation:

Speed = Distance/Time – This tells us how slow or fast an object moves. It describes the distance travelled divided by the time taken to cover the distance.

Speed is directly Proportional to Distance and Inversely proportional to Time. Hence,

Distance = Speed X Time, and

Time = Distance / Speed, as the speed increases the time taken will decrease and vice versa.

These equations can be used to solve any simple problems. But while utilizing formulas, it's also crucial to remember to use the right units.

Units of Speed Time & Distance

Time: seconds(s), minutes (min), hours (hr)

Distance: (meters (m), kilometers (km), miles, feet

Speed: m/s, km/hr

Given:

Distance$=180km$

Time$=2\frac{1}{2} hr$

        $=\frac{5}{2}$ hr

$Speed=\frac{Distance}{Time}$

$=\frac{180}{\frac{5}{2} }$

$=\frac{180\times2}{5} \\=72km/hr$

Hence, speed of the car is 72km/hr.

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