In one of the teacher's meetings, it was agreed that each class will contribute $90 for a school activity. The class of Miss Evans has $14 class funds and they decided to use it to lessen the contribution of each student. If the remaining amount will be divided among 19 students, how much will each student contribute? Give the rationale and then the answer.
Let's think step by step. The 19 students will divide equally the remaining $90 - $14 = $76. So, each student will contribute $76 / 19 students = $4 / student.. The answer is: 4.

Katy, Wendi, and Carrie went to a bread-making party. Katy brought three 5-pound bags of flour. Wendi brought twice as much flour as Katy, but Carrie brought 5 pounds less than the amount of flour Wendi brought. How much more flour, in ounces, did Carrie bring than Katy? Give the rationale and then the answer.
Let's think step by step. Katy's three 5 - pound bags of flour weigh 3 * 5 = 15 pounds. Wendi brought twice as much flour as Katy, or 15 * 2 = 30 pounds of flour. Carrie brought 5 pounds less flour than Wendi, or 30 - 5 = 25 pounds of flour. Thus, Carrie brought 25 - 15 = 10 pounds of flour more than Katy. In ounces, the 10 pound difference is 10 * 16 = 160 ounces.. The answer is: 160.

Stephen ordered 2 large pizzas, both cut into 12 slices. He ate 25% of the pizza. His friend Pete ate 50% of the remaining pizza. How many slices are left over? Give the rationale and then the answer.
Let's think step by step. He ordered 2 pizzas, each cut into 12 slices so that's 2 * 12 = 24 slices. Stephen ate 25% of the pizza so he ate .25 * 24 = 6 slices. That leaves 24 - 6 = 18 slices. 18 slices are left and Pete eats 50% of 18 slices so he eats 18 * .50 = 9 slices. If there were 18 slices and Pete ate 9 slices then there are 18 - 9 = 9 slices left over.. The answer is: 9.