Answer:
Step-by-step explanation:
126 buttons.....8 two holes for every 4 holes...added = 12
so 8/12 of the total buttons are two hole and 4/12 of the total buttons are four hole
8/12 of 126 = 2/3 * 126 = 252/3 = 84 two hole buttons <==
4/12 of 126 = 1/3 * 126 = 126/3 = 42 four hole buttons <==