Lizzy: Martin eats 1/2 cup of berries every day. The grocery store is selling a package of berries (1 cup per pack) for $2.00. How much will he spend on berries in a 30 day period?.
Me: Hmmm, let me think. I think this is the detailed solution:
Martin eats 1 / 2 cup berries every day so over 30 days that's .5 * 30 = 15 cups of berries. The grocery store sells 1 cup packages of berries for $2.00 a pack. Martin needs 15 cups so that's 2 * 15 = $30.00. Final answer: 30.