PLEASE HELP I CANT EVEN HELP MY BROTHER TO SOLVE THIS its for my brother

43

Step-by-step explanation:

So it can carry 30 children OR 29 adults.

All the passengers were children, and it carried a full load 43 times.  So 30 children is the full load, then 30x43 is 1290.

It carried 1290 children.

If all the passengers were adults, then we can do 29x43=1247.

1290-1247 is 43.

In fact, in 30x43 and 29x43, 30-29 is actually just one! So one times forty three is 43.

Here's ur answer

step-by-step :

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