Question
Mathematics Question on SI & CI
How much interest will Rs- 10,000 earn in 9 months at an annual rate of 6 per cent?
A
450
B
500
C
475
D
600
Answer
450
Explanation
Solution
The correct option is (A): 450
Explanation: To calculate the interest earned on Rs. 10,000 for 9 months at an annual rate of 6%, we can use the formula for simple interest:
Interest=Principal×Rate×Time
1. Principal (P) = Rs. 10,000
2. Rate (R) = 6% per annum = 0.06 (as a decimal)
3. Time (T) = 9 months = 129 years = 0.75 years
Now substituting these values into the formula:
Interest=10,000×0.06×0.75
=10,000×0.045
=450
Thus, the interest earned is Rs. 450. Therefore, the answer is A: 450.