Which simpler problems could be calculated to solve this problem? three people went to lunch and agreed to share the cost equally. george's meal cost $6.75, david's meal cost $4.25, and liz's meal cost $5.50. they agreed to leave an 18% tip. how much did each person pay?

b

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