Ram invested a sum of 12000 at the rate of 10% per annum simple intere...
Calculation:
Let's assume the first sum invested by Ram at 10% per annum simple interest is Rs. X.
The second sum invested by Ram at 20% per annum simple interest is Rs. Y.
Interest earned on X at 10% per annum:
The interest earned on X at 10% per annum can be calculated using the formula:
Interest = (Principal * Rate * Time) / 100
Let's assume the time period for both investments is 1 year.
So, the interest earned on X at 10% per annum is (X * 10 * 1) / 100 = X/10.
Interest earned on Y at 20% per annum:
The interest earned on Y at 20% per annum can be calculated using the same formula:
Interest = (Principal * Rate * Time) / 100
So, the interest earned on Y at 20% per annum is (Y * 20 * 1) / 100 = Y/5.
Total interest earned on both sums:
The total interest earned at the end of 1 year is given as the interest earned on the whole sum at 14% per annum.
Let's assume the whole sum invested by Ram is Rs. Z.
So, the interest earned on Z at 14% per annum is (Z * 14 * 1) / 100 = 7Z/50.
According to the question, the total interest earned on both sums (X and Y) is equal to the interest earned on the whole sum Z.
Therefore, X/10 + Y/5 = 7Z/50.
Simplifying the equation:
Multiply both sides of the equation by 50 to eliminate the denominators.
5X + 10Y = 7Z.
Since we don't have the exact values of X, Y, and Z, we cannot solve this equation directly. However, we can make some observations.
Observations:
1. As the rate of interest increases, the interest earned also increases. So, we can assume that Z > X > Y.
2. The sum of the coefficients of X and Y on the left side is 15, while the coefficient of Z on the right side is 7. This means that Z is less than the sum of X and Y.
Conclusion:
Based on these observations, we can conclude that the whole sum Z invested by Ram is greater than the sum of X and Y.
Unfortunately, without further information or any specific values, we cannot determine the exact value of the whole sum Z.
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