The letter tiles C, A, R, E, and S are placed in a box. Without looking, Jorelle picks a letter tile from the box and records that result before placing it back. He repeats the procedure 100 times and observes the following results:

Outcomes C A R E S
Frequency 20 25 30 10 15
Based on the observed frequency, what is the probability that Jorelle will pick a letter R? the answer should be in percent form.

The probability of picking the letter R can be calculated by taking the frequency of R (30) and dividing it by the total number of trials (100) and then converting it to a percentage.

Probability of picking R = 30/100 = 0.3

Converting it to a percentage: 0.3 * 100% = 30%

Therefore, the probability that Jorelle will pick the letter R is 30%.