Mariana has 11 white buttons. She has 9 fewer brown buttons than white buttons. Mariana has 15 more gray buttons than brown buttons. How many buttons does Mariana have in all?_____ buttons
Q. Mariana has 11 white buttons. She has 9 fewer brown buttons than white buttons. Mariana has 15 more gray buttons than brown buttons. How many buttons does Mariana have in all?_____ buttons
Calculate Brown Buttons: Calculate the number of brown buttons Mariana has.Mariana has 9 fewer brown buttons than white buttons. She has 11 white buttons.11−9=2 brown buttons.
Calculate Gray Buttons: Calculate the number of gray buttons Mariana has.Mariana has 15 more gray buttons than brown buttons. From the previous step, she has 2 brown buttons.2+15=17 gray buttons.
Calculate Total Buttons: Calculate the total number of buttons Mariana has.Add the number of white, brown, and gray buttons.11 (white) + 2 (brown) + 17 (gray) = 30 buttons.