Answer
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Step 1:I'll solve this step-by-step using the specified LaTeX formatting guidelines:
Step 2:: Understand the Problem
To find 90% of 40, we need to multiply 40 by 0.90 (which is the decimal equivalent of 90%).
Step 3:: Set Up the Calculation
40 \times 0.90
Step 4:: Perform the Multiplication
40 \times 0.90 = 36
Step 5:: Verify the Calculation
- $$\frac{90}{100} \times 40 = 36
Let's double-check our work:
Final Answer
The correct answer is A. 36. Key Insights: - To calculate a percentage of a number, multiply the number by the percentage expressed as a decimal - 90% = 0.90 - Always convert the percentage to a decimal before multiplying
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