Agum ball machine contains 23 green gum balls, 52 red gum balls, 61 yellow gum balls and 30 pink gum balls what percent of the gum balls are red

Total of all the colors: 23 + 52 + 61 + 30 = 166

there is 52 red.

Divide 52 by 166:

52 / 166 = 0.3133

Multiply the decimal by 100:

0.3133 x 100 = 31.33%  Round to 31%

the answer is 489

step-by-step explanation:

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