A principal amount of $2500 is invested at a compound interest rate of 7% per an

Practice Questions

Q1
A principal amount of $2500 is invested at a compound interest rate of 7% per annum. What will be the amount after 5 years?
  1. $3500
  2. $3502.50
  3. $3520.25
  4. $3525.00

Questions & Step-by-Step Solutions

A principal amount of $2500 is invested at a compound interest rate of 7% per annum. What will be the amount after 5 years?
Correct Answer: $3506.38
  • Step 1: Identify the principal amount (P), which is $2500.
  • Step 2: Identify the annual interest rate (r), which is 7%. Convert this to decimal form by dividing by 100: 7% = 0.07.
  • Step 3: Identify the number of years (n) the money is invested, which is 5 years.
  • Step 4: Use the compound interest formula: Amount = P(1 + r)^n.
  • Step 5: Substitute the values into the formula: Amount = 2500(1 + 0.07)^5.
  • Step 6: Calculate (1 + 0.07) = 1.07.
  • Step 7: Raise 1.07 to the power of 5: (1.07)^5 = 1.402552.
  • Step 8: Multiply the principal amount by this result: Amount = 2500 * 1.402552.
  • Step 9: Calculate the final amount: Amount = $3506.38.
  • Compound Interest – Understanding how compound interest works, including the formula used to calculate the future value of an investment.
  • Exponents – Applying exponent rules in the context of compound interest calculations.
  • Financial Literacy – Basic knowledge of investment principles and the impact of interest rates over time.
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