Please help me solve the number 6 to 10

6. Find average of following numbers Marks 2 A. 12,3,25,18,5,6,35,40 B. 38,9,8,16,81,10 7. Jia receives a monthly salary of $5000 paid monthly. Jia's regular workweek is 40 hours. Any hours worked over 40 hours in a week are overtime and are paid at time- and-a-half regular pay. During the first half of October, Jia worked 5 hours overtime. Marks 4 Find a. of Jia b. Weekly gross earnings of Jia c. Hourly rate of Pay of Jia d. Overtime Pay of Jia Chapter 2 8. You scored 80 answers correct out of 100 problems on a test. Write the ratio of correct answers to total questions and reduce it to lowest form. Marks 2 9. Identify ratios are in proportion or not? Using Factors method. Marks 2 a. 25/80 and 36/45 b. 50/20 and 80/30 10. Identify ratios are in proportion or not? Using Cross multiplication method Ma rks 2 a.125/25=85/50 b.20/30 =8/ 12