An orange juice producer buys all his oranges from a large orange orchard. The amount of juice squeezed from each of these oranges is approximately normally distributed with a mean of 4.7 ounces and a standard deviation of 0.40 ounce.

From Excel, we know that the probability is 30.85% that a randomly selected orange will contain less than 4.5 ounces of juice. Also the probability is 10.56% that a randomly selected orange will contain more than 5.2 ounces of juice. Without further use of Excel, what is the probability (in %) that a randomly selected orange will contain less than 4.2 ounces of juices?