To determine the present yield after a 15% increase from the previous yield of 6500 tonnes, follow these steps:
1. Identify the Previous Yield: The previous yield is given as 6500 tonnes.
2. Determine the Increase Percentage: The yield has increased by 15%.
3. Calculate the Increase in Yield: To find out how much 15% of the previous yield is, we use the formula:
[tex]\[
\text{Increase Amount} = \text{Previous Yield} \times \left( \frac{\text{Percentage Increase}}{100} \right)
\][/tex]
Substituting the values:
[tex]\[
\text{Increase Amount} = 6500 \times \left( \frac{15}{100} \right) = 6500 \times 0.15 = 975 \text{ tonnes}
\][/tex]
4. Compute the Present Yield: To find the present yield, we add the increase amount to the previous yield:
[tex]\[
\text{Present Yield} = \text{Previous Yield} + \text{Increase Amount} = 6500 + 975 = 7475 \text{ tonnes}
\][/tex]
Therefore, the present yield is 7475 tonnes. Hence, the correct answer is:
A. 7475 tonnes