Answer:
43
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.
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