Answer:

Explanation:
first ,let’s calculate the number of bags made by the company that have both buttons and zips :
150-(43+38+34)
=35
a bag that has buttons : either has buttons but no zips or has both buttons and zips
Then
The number of the bags that have buttons is :
43+35 = 78
………………………
Conclusion:
the probability that the bag has buttons is :
