In a volleyball game, caroline served the ball over the net 16 out of 20 times. what percent did she not make her serve over the net?

Number of times Caroline served over the net = 16 times
Number of times Caroline did not serve over the net = 20 - 16 = 4 times

Hence, Percentage of her incorrect serves is given by:


Caroline did not make 20% of her serves

The answer is part a: use