In a recipe for fizzy grape juice the ratio of cups of sparkling water to cups of grape juice is 3: 1

4 cups

Step-by-step explanation:

3 pluse 1 this is the answer of the ratio

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

at least two

step-by-step explanation: