Answer:
21
Step-by-step explanation
They jumped 3 meters above the water, jumped down 18, 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18, thats 15 away, the distance is 15, if I am worng (probably am) try 20, if not, Im retarted and dont trust me with this.
9514 1404 393
21 m
Explanation:
The difference in height between +3 meters and -18 meters is ...
3 -(-18) = 3 +18 = 21 . . . . meters
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