Question

a body covers 2050 km in 9 hours and 3050 km in 12 hours calculate average speed​

Answer 1

Answer ::

The average speed of the body is 242.85 km/h.

Step-by-step explanation ::

To Find :-

• The average speed of a body

Solution :-

Given that,

• A body covers 2050km in 9 hours and 3050km in 12 hours

According the question,

The average speed of the body is,

$\bf{ \underline{Average \: speed} = \dfrac{Total \: Distance}{Total \: time}} \\ \\ \\ \sf{ \longmapsto \: \dfrac{2050 \: km + 3050 \: km}{9 \: hours + 12 \: hours}}\\ \\ \\ \sf{ \longmapsto \: \dfrac{2050 + 3050}{9 + 12}}\\ \\ \\ \sf{ \longmapsto \: \dfrac{5100}{21}}\\ \\ \\ \sf{ \longmapsto \: \cancel{\dfrac{5100}{21}}} \\ \\ \\ \bf{ \longmapsto \: 242.85 \approx}$

The average speed of the body is 242.85 km/h.

More Information

Some more important formulas related to speed, time and distance :-

• Speed = Distance / Time
• Time = Distance / Speed
• Distance = Speed × Time
• Average speed = Total distance / Total time.