the trainer kept trying to teach her dolphins how to play baseball, but after a year's worth of practice, only 4 out of 15 knew the difference between a "strike" and "ball." What percentageof the dolphins knew the difference between "strike" and a "ball"? Write your answer as a fractional percent. Make sure your answer is fully reduced.
PLEASE HELP!!!!!!!!! and explain how to do it.. thank you!!!!!!
