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- Identify the given values: principal, rate, time, interest, or amount.
- Apply the correct simple interest formula.
- Match the obtained answer with the options.
Correct Answer: D
Correct Answer: D
Method / Topic: Simple Interest
The answer follows the simple interest relation among principal, rate, time, interest, and amount.
Short Explanation
Detailed Explanation
Correct Answer: D
Method / Topic: Simple Interest
Use rate=SI×100/(P×T). The simple interest is Rs. 720, giving an annual rate of 5 percent.
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Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- Identify the given values: principal, rate, time, interest, or amount.
- Apply the correct simple interest formula.
- Match the obtained answer with the options.
A sum of Rs. 7200 amounts to Rs. 7920 in 2 years at simple interest. What is the annual rate?
Explanation
Correct Answer: D
Method / Topic: Simple Interest
The answer follows the simple interest relation among principal, rate, time, interest, and amount.
Short Explanation
Detailed Explanation
Correct Answer: D
Method / Topic: Simple Interest
Use rate=SI×100/(P×T). The simple interest is Rs. 720, giving an annual rate of 5 percent.
See full explanation + shortcut trick
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