Compound Interest Practice Test Set 3

Step 1: Identify what the question asks and note the relevant values from the question.
Step 2: Apply the appropriate compound-interest or simple-interest relationship.
Effective CI % for 2 years at 5% = 10.25% = 41/400. P * (41/400) = 328 => P = 8 * 400 = Rs 3,200.

Step 3: Match the calculated result with the options.
The matching value is the correct answer.

Correct Answer: Option D.

Step 1: Identify what the question asks and note the relevant values from the question.
Step 2: Apply the appropriate compound-interest or simple-interest relationship.
A/P = 11,664 / 10,000 = 1.1664. Annual multiplier = sqrt(1.1664) = 1.08. Rate R = (1.08 - 1) * 100% = 8%.

Step 3: Match the calculated result with the options.
The matching value is the correct answer.

Correct Answer: Option A.

Step 1: Identify what the question asks and note the relevant values from the question.
Step 2: Apply the appropriate compound-interest or simple-interest relationship.
Difference for 3 years = P * (R/100)^2 * (300 + R)/100 = P * (1/100) * (310/100) = 31P / 1000. 31P / 1000 = 155 => P = 5 * 1000 = Rs 5,000.

Step 3: Match the calculated result with the options.
The matching value is the correct answer.

Correct Answer: Option B.

Step 1: Identify what the question asks and note the relevant values from the question.
Step 2: Apply the appropriate compound-interest or simple-interest relationship.
Rate R = (5,324 - 4,840) / 4,840 * 100% = 484 / 4,840 * 100% = 10%. P * (1.$1)^2$ = 4,840 => 1.21 P = 4,840 => P = Rs 4,000.

Step 3: Match the calculated result with the options.
The matching value is the correct answer.

Correct Answer: Option C.

Step 1: Identify what the question asks and note the relevant values from the question.
Step 2: Apply the appropriate compound-interest or simple-interest relationship.
Effective CI % = 12 + 12 + (12*12)/100 = 25.44%. CI = 25,000 * 25.44% = Rs 6,360.

Step 3: Match the calculated result with the options.
The matching value is the correct answer.

Correct Answer: Option D.