At a stationary store salesman sells 3 kinds of pens in2 different ink colors, draw a tree diagram to represent the outcome

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

hint: which coefficient is a multiple of 360°?

step-by-step explanation:

16 is the coefficient

hope this