We have the following:
with a proportionality rule we can solve the question, since if 40% are 60 pieces, how many will be 100% :
[tex]\begin{gathered} 60\rightarrow40 \\ x\rightarrow100 \\ x=\frac{100\cdot60}{40}=150 \end{gathered}[/tex]The answer is 150 pieces of bubble in total
