Olenka

Jack has 120 songs on his music player. Some are rock, some are jazz, and the rest of classical pieces. If his music player is on who random shuffle mode the probability that it will be to play a classical piece is 2/5 and the probability that it will pla...

Howie and Steve are making cookies for themselves and some friends. The recipe are using will make 48 cookies, but they only want to make 16 cookies. They have no trouble reducing the amounts of flour and sugar, but the original recipe for 134 cups of but...