Question
Xavier, Bobby and Pierre had a total of 329 buttons at first. After a week, the number of Xavier's buttons became 3 times the number of buttons he had at first. The number of Bobby's buttons decreased by 169. Pierre had one-quarter as many buttons as he had at first. In the end, the three boys had the same number of buttons.
  1. How many buttons did Pierre have at first?
  2. What was the total number of buttons that the three boys had in the end?
5 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Xavier, Bobby and Pierre had a total of 329 buttons at first. After a week, the number of Xavier's buttons became 3 times the number of buttons he had at first. The number of Bobby's buttons decreased by 169. Pierre had one-quarter as many buttons as he had at first. In the end, the three boys had the same number of buttons.
  1. How many buttons did Pierre have at first?
  2. What was the total number of buttons that the three boys had in the end?