joy joy were able to bake 150 cookies and 5 days each day she made it more cookies that that of the previous day how many cookies did she start with use a gonsa
Answer (1)
Problem: Joy baked 150 cookies in 5 days. Each day she made more cookies than the previous day. Find how many cookies she started with.Solution using Guess and Check (GONSA):Let’s assume she started with x cookies.Day 1 = xDay 2 = x + dDay 3 = x + 2dDay 4 = x + 3dDay 5 = x + 4dTotal = 5x + 10d = 150Simplify: 5(x + 2d) = 150x + 2d = 30Now test values:If d = 5 → x + 10 = 30 → x = 20Day 1 = 20, Day 2 = 25, Day 3 = 30, Day 4 = 35, Day 5 = 40 → Total = 150 ✔Answer: Joy started with 20 cookies on the first day.
