Javier had $305, his bank charges a fee of $7.50 a month that a balance is below $500. if he makes no other deposits or withdrawals, how much money is in javiers account at the end of the three months?

7.50 * 3 = 22.50

305 - 22.50 = 282.50

At the end of 3 months, Javiers account would be $282.50

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