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If 40% of a number is 80, what is the number?
If 40% of a number is 80, what is the number?
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Practice Questions
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Q1
If 40% of a number is 80, what is the number?
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Let the number be x. Then, 0.4x = 80. So, x = 80 / 0.4 = 200.
Questions & Step-by-step Solutions
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Q: If 40% of a number is 80, what is the number?
Solution:
Let the number be x. Then, 0.4x = 80. So, x = 80 / 0.4 = 200.
Steps: 7
Show Steps
Step 1: Understand that 40% means 40 out of 100, or 0.4 in decimal form.
Step 2: Let the unknown number be represented by 'x'.
Step 3: Write the equation for 40% of 'x': 0.4 * x = 80.
Step 4: To find 'x', we need to isolate it. We can do this by dividing both sides of the equation by 0.4.
Step 5: Perform the division: x = 80 / 0.4.
Step 6: Calculate 80 divided by 0.4, which equals 200.
Step 7: Conclude that the number is 200.
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