Penelope is 4 times as old as jose. jose is 3 years older than eliot. if the sum of all three is 57 years, how old will jose turn in 4 years. (and how did you get that answer)

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236