please help
Q1.1: Salem's company plans to borrow SAR 20,000 from ALRAJHI bank for 1 year at 9% interest for new recording equipment. (a) Compute the interest and the total amount due after 1 year. If we consider the total amount after 1 year is SAR 20,900, what is the interest amount and the interest rate? (3 points)
Q1.2: STC employee loaned money to a customer for a new iphone device. The loan is for SAR 1000 for 5 years at 3% per year simple inter-est. How much money will the customer repay at the end of 5 years? (2 points)
Q2.1: An engineer received a bonus of $10,000 that he will invest now. He wants to calculate the equivalent value after 20 years, when he plans to use all the resulting money as the down
payment on an island vacation home. Assume a rate of return of 9% per year for each of the 20 years. Find the amount he can pay down, using both the standard notation and the factor formula. (2points)
Q2.2: (a) How much money should you be willing to pay now for a guaranteed $900 per year for 10 years starting next year, at a rate of return of 10% per year? Draw the cash flow diagram. (b) If you to know the equivalent future worth of a $900 investment each year for 10 years, starting 1 year from now. How much money should you be willing to gain at the 10th year. Draw the cash flow diagram.
Q3.1: The different bank loan rates for three separate electric generation equipment projects are listed below. Determine the effective rate on the basis of the compounding period for each quote. (a) 9% per year, compounded quarterly. (b) 9% per year, compounded monthly. (c) 4.5% per 6- months, compounded weekly. (5 points)
Q4: A company has three different assembly methods. Method A will have a first cost of 40,000. AOC 9,000. And service life of 2 years. Method B will cost 80,000 to buy and AOC 6,000 over its 4 years service life. Method C will cost 130,000 initially with AOC 4,000 over its 8-year life. Methods A & B will have no salvage value, but method C will have some equipment worth an estimated 12,000. Which method should be selected? Use present worth analysis at an interest rate of 10% per year. (5 points)