Mary invested $200 for 3 years at 5% per annum. John invested $300 at the same rate. If they both received the same amount of money in
simple interest, for how many years did John invest his money?

a. 1 1/2
b. 2
c. 3
d. 10

Trey morgan is an employee who is paid monthly. for the month of january of the current year, he earned a total of $4,538. the fica tax for social security is 6.2% of the first $118,500 earned each calendar year, and the fica tax rate for medicare is 1.45% of all earnings for both the employee and the employer. the amount of federal income tax withheld from his earnings was $680.70. his net pay for the month is .