Total number of bulbs that were manufactured last year = [tex]1.8*10^{9} [/tex]
Percentage of defective bulbs = 2%
Number of defective bulbs = Percentage of defective bulbs x Total number of bulbs.
Using the values, we get:
Number of defective bulbs = [tex]0.02 * 1.8*10^{9} [/tex]
[tex] \\ =2*1.8*10^{7} \\ \\
=3.6*10^{7} [/tex]
Thus, [tex]3.6*10^{7} [/tex] defective bulbs were manufactured last year
