91. In one particular high school band in a certain school, 1/2 of the players are in 9th grade; 1/6 are in 10th grade; 1/12 are in 11th grade. The 12th graders number 15. How many players are in this band?
92. It's hard to keep within a budget. Jennifer was preparing for her class's April Spring Party. She had been given money from the common fun to use. She spent half of it plus $2.00 for a nice cake. Then she spent half of what she had left plus $2.00 for decorations. Then she spent half of what she had left plus $1.00 for candy. At that point she was out of money. How much did she have to start with?
94. In four years, Ryan will be as old as Rachel is now, and Rachel will be three times as old as Ryan is now. At the moment, Rachel is twice as old as Ryan. How old are they provided Rachel is not yet a teenager?
98. A shopkeeper packs his dog biscuits in boxes containing 16, 17, 23, 24, 39 and 40 pounds, and he is not prepared to sell them in any other way, nor break into a box. A customer asks to be supplied with exactly 100 pounds of biscuits. If you were the shopkeeper, could you meet the customer's requirements? If not, how near could you get to supplying the 100 pounds? You can assume that there is an ample supply of boxes of each size.