Ajar of alphabet tiles contains 10 unique consonant tiles and 5 unique vowel tiles. if 5 tiles are picked randomly, the probability that 3 are consonants and 2 are vowels is .

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?