Answer:
Cost of a single light bulb is $3.34
Step-by-step explanation:
Value of sales tax = 6% ×$71.02
= $4.2612
Total cost of bulb before tax = Total cost of bulb - Value of sales tax
= $71.02 - $4.2612
= $66.7588
Value of a single light bulb = Total cost of bulb before tax ÷ Total number of light bulbs
= $66.7588 ÷ $20
= $3.33794
= $3.34 Approximately.
