Lizzy: Jodi starts off walking 1 mile a day for 6 days a week. On the second week, she walks 2 miles a day, 6 days a week. On the third week, she walks 3 miles a day, 6 days a week. Finally on the fourth week, she walks 4 miles a day, 6 days a week. How many miles has she walked in 4 weeks?.
Me: Hmmm, let me think. I think this is the detailed solution:
The first week she walked 1 mile, 6 days a week for a total of 1 * 6 = 6 miles. The second week she walked 2 miles, 6 days a week for a total of 2 * 6 = 12 miles. The third week she walked 3 miles, 6 days a week for a total of 3 * 6 = 18 miles. On the fourth week, she walked 4 miles, 6 days a week for a total of 4 * 6 = 24 miles. Over four weeks she has walked 6 + 12 + 18 + 24 = 60 miles. Final answer: 60.