Compound Interest Practice Test Set 5

Write down the given values and identify the compound-interest relationship needed to find the required quantity.

Apply the formula and calculate:
Growth factor per year = 7,800 / 6,500 = 6/5. P * (6/5) = 6,500 => $P = 6,500 \cdot 5 / 6 = Rs 5,416.67$.

Write down the given values and identify the compound-interest relationship needed to find the required quantity.

Apply the formula and calculate:
Effective CI % = 15 + 15 + 2.25 = 32.25%. CI = 80,000 * 32.25% = Rs 25,800.

Identify the given principal, rate and time, and determine whether the question asks for SI, CI, their difference, or an unknown value.

Apply the formula and calculate:
SI for 3 years at 10% = 30% = 3,000 => $P = Rs 10,000$. CI for 3 years at 10% = 33.1% of 10,000 = Rs 3,310.

Write down the given values and identify the compound-interest relationship needed to find the required quantity.

Apply the formula and calculate:
Half-yearly rate = 10%. Time = 4 half-years. Effective CI % = 46.41%. CI = 10,000 * 46.41% = Rs 4,641.

Identify the given principal, rate and time, and determine whether the question asks for SI, CI, their difference, or an unknown value.

Apply the formula and calculate:
Diff = P * (10/100)^2 = 25,000 * 0.01 = Rs 250.