This week's POW options

Here are this week's POW options. Choose 1. Due Friday.

POW – due December 14

Option 1. When I was going to St Ives I met a man with seven wives. Each wife had seven sacks and each sack had seven cats. How many legs were there in the group of people and cats that I encountered on my trip to St. Ives? Assume that no one in the group is missing any limbs.

Option 2: When Cinderella’s fairy godmother sent her off to the ball to meet the prince, she had one stipulation: Cinderella had to leave by the stroke of midnight. By the time Cinderella got to the castle, moved through the crowd and met the prince, it was 10:30pm when she finally had her first dance with the prince. If each song lasted 3.5 minutes and they danced the rest of the evening, except for a 20-minute walk they took outside, how many songs did they dance to between 10:30pm and midnight?

Option 3: When the students in Harry Potter’s Spells class at Hogwarts started the year, they knew an average of 10 spells each. Hermione knew the most, 19, and Ron knew the least, 7. If Harry knew 12 spells, what was the average number of spells that each of Hermione, Ron and Harry’s 21 classmates knew at the start of the year? Express your answer as a decimal to the nearest hundredth.