Mathematics exam - Speech or Presentation Example

1. Amount spent = $80.00 + $20.00 + $140.00 = $240 Balance = $360 – 240 = $120 Average daily balance = 120 31 = $3.9 answer.The amount that was initially spent is calculated by summing up each one of th individual amounts that were spent by the individual. The total obtained is then subtracted from the amount that the individual had at the beginning of the month to get the balance. The daily balance is then obtained by dividing the balance by the number of days as sshown above.2. Amount = 87,000 * (8.5 / 100) * 20 = 147900Balance after first month= 147900 - 755.

01= 147144.99 answer3. Amount = 133,750 * (8.5 / 100) * 20 = 227375Total monthly payment= 1160.71 * 20 * 12 = 278570.4Thus the amount that is interest = 278570.4 – 227375 = $51195.4 answer4. Acoount A,Compounded amount:First half of year = [3000 * (4/100)] + 3000 = 3120Second half of year= [3120 * (4 / 100)] + 3120 = 3244.8 Account B, simple interest amount: [3000 * (5/ 100) * 2] + 3000 = 3300The account A which employs the use of compound interest shall give an accmulated amount of 3244.8. On the other hand, the account B which employs the use of simple interest shall give an accumulated amount of 3300.

From the calculations of the amount accumulated at the end of the year from account A and account B, it is quite evident that acount B shall earn more interest for the investor.ReferencesMark zagarelli. “basic Math and Pre-algebra” . 2007.