Question

solution pls... ...​

Answer 1

Answer:

hola mate❤️

see the attachment

thanks ❤️

Answer 2

Total distance = (120+120) km

                       = 240 km

Average speed = 60 km/h

First 120 km with a speed of 30 km/hr

So, time = (120/30) hour

              = 4 hour

To make the average speed 60 km/hr, the car have to pass the equal distance within=1/{(60/3)+1}

                        = 1/(2+1)

                        =1/3 of the previous time

So,  the time taken =(4*1/3)hr

                              =(4/3)*60 minutes

                             = (4*20) minutes

                             = 1 hour 20 minutes

So, total time taken =(4+1) hour 20 minutes

                                 = 5 hours 20 minutes