1. Mr. Roberts wishes to obtain an accumulated sum of money in bank of at least 500,000 SAR in a future moment in time. For such, he will deposit 2,000 SAR every month in a bank account where interest accrues at the rate of 6% per year. How many deposits does Mr. Roberts need to do to obtain at least 400,000 SAR in his account?

2. What was the average annual interest rate that transformed 150,000 SAR in 1,000,000 SAR over a 15-year period?

3. You need to invest 200,000 USD in a machine that will generate 35,000 USD of profit every year for the next 10 years. Assuming a discount rate of 11% and no terminal value for the machine, what is the expected NPV of the investment in this machine?

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