Question

Sunita goes to achool with speed 30km/h and return with 20km/h calculate average speed​

Answer 1

Answer:

25 km/h

Explanation:

BCOZ

average speed =(30+20)÷2

=50÷2

=25

Answer 2

Answer:

Explanation:

since distance covered by sunitha is same ,

average speed=2v1v2/v1+v2

              v1=30km/h

             v2=20km/h

avg speed=2*30*20/20+30

               =1200/50

              =120/5

              =24km/hr