Answer :

jayjay19019
33÷3 Because u gotta find out how many waves pass per minute 33÷3=11 now u do 11×10 because there are 10 minutes and 11 pass every minute 11×10 is 110 hope that helped
mumsy
if in 3 minutes, 33 waves crash on the shore, it means 
33/3= 11 waves/minute
in 10 minutes
10*11=110