Final answer:
The sales tax on a $229 computer hard drive at a rate of 5% is $11.45. In the class election where 35% voted for Leandro which is 70 students, the remaining 65% voted for Gerardo, totaling 130 students.
Step-by-step explanation:
To find the sales tax on a computer hard drive that costs $229 at a rate of 5%, you first convert the percent to a decimal by dividing by 100: 5% = 0.05. Then, multiply this decimal by the total cost to get the amount of sales tax.
Amount of sales tax = $229 × 0.05 = $11.45
For the election question, if 35% of students voted for Leandro which is 70 students, you can calculate the total number of students who voted. Since 35% equals 70 students, 1% equals 70 ÷ 35. The total percentage is 100%, so you find the total number of students and then subtract the number who voted for Leandro to see how many voted for Gerardo.
Total number of students = 70 ÷ 0.35 = 200 students
Students voted for Gerardo = Total students - Students voted for Leandro = 200 - 70 = 130 students