Assignment:
Q1. The president of a certain university makes three times as much money as one of the department heads. If the total of their salaries is$ 200.000, find each worker's salary
Q2. Including a 6.1% sales tax, a diamond ring sold for $ 2,864.70. Find the price of the ring before the tax was added.( round to the nearest cent).
Q3.Judy has a rectangular garden 10 by 30 feet. She wants to put a grass border around the garden with a uniform width on all sides. If she has enough grass seed to cover 384 square feet, how wide can the grass border be?
Q4. An auto repair shop charged a customer $424.00 to repair a car. THE BILL LISTED $74 for parts and the remainder for labor. If the cost of labor is $35 per hour , hoe many hours of labor did it take to repair the car?
Provide complete and step by step solution for the question and show calculations and use formulas.