Question

The poetry club had its first bake sale, and they made $79.35. The club members are planning to have 4 more bake sales. Leslie said, "If we make the same amount at each bake sale, we’ll earn $3,967.50." Peggy said, "No way, Leslie! We’ll earn $396.75 after five bake sales." Use estimation to help Peggy explain why Leslie’s reasoning is inaccurate. Show your reasoning using words, numbers, or pictures.​

Answer 1

Let’s say they do make an average of $79.35 every bake sale. They’re planning to have 4 more sales so 4x79.35=317.4 which is what they will hypothetically make at the next sales. Add the previous earnings: 79.35+317.4=396.75 and that is the estimated profit for all 5 bake sales which proves that Peggy is correct.