Kantana loves chocolate. Every Saturday she goes to the candy store and buys 2 chocolates for herself and 1 for her sister. This last Saturday she picked up an additional 10 chocolates as a birthday gift for her friend Charlie. How many chocolates did Kantana end up buying for the month? Give me reasons, before answering the question
There is 1 Saturday in a week and there are 4 weeks in a month so there are 1 * 4 = 4 Saturdays in a month (on average). If Kantana buys herself 2 chocolates every Saturday then this means she buys 2 * 4 = 8 chocolates for herself for the month. Kantana also buys her sister 1 chocolate on these trips so she is picking up an additional 1 * 4 = 4 additional chocolates for her sister for the month. Kantana decided to also purchase some chocolates for her friend Charlie for his birthday. She bought Charlie 10 chocolates. This means that for the month she bought 10 chocolates for Charlie, 4 chocolates for her sister, and 8 chocolates for herself, 10 + 4 + 8 = 22 chocolates bought in total for the month. So the final answer is 22.