Question

junket covers three successive 2 kilometre laps at speeds of 20 km per hour 30 kilometre per hour and 40kmph respectively.his average speed over the distances is​

Answer 1

Answer:

ANS.. 30 km/hr

Step-by-step explanation:

GIVEN,

Speed 1 - 20km/hr

Speed 2-30km/hr

Speed 3-40km/hr

1. AVERAGE -. SUM OF OBSERVATIONS / NO.OF OBSERVATION S

--. 20+30+40/3. 90/ 3 km /hr - 30 km/hr

Answer 2

Answer:27 9/13

Step-by-step explanation:

     3*20*30*40

=⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

20*30+30*40+20*40

   3*20*30*40

=⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

  600+1200+800

    3*20*30*40

=⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

    2600

=360/13