Financial Mathematics Quiz: Income Calculations

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11 Questions

What is the total weekly net pay after all deductions?

Calculation required

What is the balance in the simple interest account after 3 years?

$ ext{Balance} = P(1 + rt)$

How much will the CD be worth upon maturity?

$ ext{CD worth} = P(1 + r)^n$

What is the value of the savings account after 14 years of compound interest?

Calculation required

Match the financial vocabulary terms with their correct descriptions.

i - B, ii - C, iii - D, iv - A

What is the annual gross income of someone making the Arizona minimum wage of $12.80 per hour, working full-time at 40 hours per week?

$12.80 x 40 hours/week x 52 weeks

How do you calculate the monthly gross income of an auto dealership worker with a 3% commission on each car sold, in addition to a $17,000 annual salary, selling 9 cars worth an average of $23,000 each in a month?

($23,000 x 9 cars) x 3% + $17,000

What is the monthly after-tax income of someone earning an annual salary of $52,850, considering Federal (17%), Georgia (6%), Social Security (6.2%), and Medicare (1.45%) tax rates?

$52,850 / 12 - ($52,850 / 12 x 0.17 + $52,850 / 12 x 0.06 + $52,850 / 12 x 0.062 + $52,850 / 12 x 0.0145)

If a full-time employee earns $13.80 an hour, working 40 hours per week, how much is deducted from their monthly paycheck for the company's retirement plan that costs 2.5% of the gross income?

$13.80 x 40 hours/week x 4 weeks x 0.025

How much money is deducted from the monthly paycheck of an employee who took 10 work days off for vacation, 3 days off for a family wedding, and 5 sick days, earning $21.56 per hour and working 8 hours a day?

($21.56 x 8 hours/day x (10 + 3 + 5) days) / 2

What is the net pay of an individual earning $830 per week?

$830

Study Notes

Income Calculations

  • Arizona minimum wage: $12.80 per hour
  • Full-time work: 40 hours per week
  • Annual gross income based on Arizona minimum wage: $66,496 per year
  • Monthly gross income calculation: (Annual salary / 12) + (Commission rate x Average sale value x Number of sales)

Commission and Salary

  • Auto dealership sales commission: 3% of each car sale
  • Average sale value: $23,000
  • Typical monthly sales: 9 cars

Taxes and Income

  • Federal tax rate: 17%
  • Georgia state tax rate: 6%
  • Social Security tax rate: 6.2%
  • Medicare tax rate: 1.45%
  • Monthly after-tax income calculation: (Annual salary x (1 - Tax rate)) / 12

Retirement Plans

  • Company retirement plan deduction: 2.5% of gross income
  • Monthly retirement plan deduction calculation: (Gross income x 2.5%) / 100

Loss of Pay

  • Annual days off: 15 days
  • Vacation days: 10 days
  • Sick days: 5 days
  • Loss of pay calculation: (Hourly rate x Hours worked per day x Number of days lost)

Net Pay

  • Weekly net pay calculation: (Weekly gross pay x (1 - Tax rate)) - (Retirement plan deduction + Health insurance deduction)

Simple Interest

  • Simple interest calculation: (Principal amount x Interest rate x Time)
  • Interest rate: 3.5% per annum

Compound Interest

  • Compound interest calculation: (Principal amount x (1 + Interest rate/n)^(n*Time))
  • Interest rate: 3% per annum
  • Compounding frequency: Annually

Financial Vocabulary

  • Bonus: A one-time payment for exceptional performance
  • Hourly Pay: Payment based on the number of hours worked
  • Commission: Payment based on a percentage of sales
  • Base Salary: Fixed annual payment for work performed

Test your knowledge on calculating different types of income including annual gross income and monthly gross income based on real-world scenarios with accurate and up-to-date data.

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