A shopkeeper takes 12 bags of coins to the bank. The bags contain the following numbers of coins: 150, 163, 158, 165, 172, 152, 160, 170, 156, 162, 159 and 175. a Represent this information in a stem-and-leaf diagram. b Each bag contains coins of the same value, and the shopkeeper has at least one bag containing coins with dollar values of 0.10, 0.25, 0.50 and 1.00 only. What is the greatest possible value of all the coins in the 12 bags? Com