The total cost of staying at High Services Hotel is $40 per night per person. Jenny and two of her friends went to the hotel and stayed for three nights. What's the total amount of money they all paid together? Give the rationale and then the answer.
Let's think step by step. If each of them stayed 3 nights, the total cost per person is $40 / night * 3 nights = $120. Since they were three, the combined cost is $120 + $120 + $120 = $360.. The answer is: 360.

A school is planning a community outreach program. Each classroom must raise $200 for this activity. Classroom A has raised $20 from each of two families, $10 from each of eight families, and $5 from each of ten families. How much more money does Classroom A need in order to reach the goal? Give the rationale and then the answer.
Let's think step by step. Classroom A raised 2 x $20 = $40 from two families. They raised 8 x $10 = $80 from eight families. They raised 10 x $5 = $50 from ten families. Altogether, they raised $40 + $80 + $50 = $170. Therefore, they need $200 - $170 = $30 more to reach the goal.. The answer is: 30.

There is a pie-eating contest at school. Adam eats three more pies than Bill. Sierra eats twice as many pies as Bill. If Sierra ate 12 pies, how many pies were eaten in total? Give the rationale and then the answer.
Let's think step by step. Bill ate 12 / 2 = 6 pies. Adam ate 6 + 3 = 9 pies. They ate a total of 6 + 9 + 12 = 27 pies.. The answer is: 27.