Question

Vinay covers 560 km at a speed of 70 km/hr and the next 240 km at a speed of 120 km/hr. What is his average speed?

Answer 1

Average speed= total distance covered / toyal time taken
= 560 km +240 km/ 8hr + 2 hr
= 800 km / 10 hr
= 80 km/hr.

Answer 2

The average speed is 80 km/hr

Step-by-step explanation:

Distance traveled by Vijay = 560 km

Speed of Vijay = 70 km/hr

$Time = \frac{Distance}{Speed}\\Time = \frac{560}{70}$

Time =8 hours

Distance traveled by Vijay at next = 240 km

Speed of Vijay = 120 km/hr

$Time = \frac{Distance}{Speed}\\Time = \frac{240}{120}$

Time =2 hours

Average speed =$\frac{\text{Total distance}}{\text{Total time}}$

Average speed = $\frac{560+240}{8+2}$

Average speed = 80 km/hr

Hence The average speed is 80 km/hr

#Learn more:

47)an aeroplane flies along the sides of an equilateral triangle with speed of 300 km/hr, 200 km/hr,240 km/hr. the average speed of the plane while flying around the triangle is:

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