A car travels at 40 kilometers per hour. how much time he will need to travel 30 km

45 minutes or can be also 0.75 hours

Step-by-step explanation:

per hours refers to 1 hours.

40 km ---> 1 hours

1 km ---> 1/40 hours

30 km ---> { ( ) * 30} hours

          --> 0.75 hours

Conversion: 0.75 * 60 minutes

                   : 45 minutes

i believe the answer is the polygon, heptagon.

maybe i can