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If 45% of a number is 90, what is the number?
If 45% of a number is 90, what is the number?
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If 45% of a number is 90, what is the number?
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Let the number be x. 0.45x = 90, x = 90/0.45 = 200
Questions & Step-by-step Solutions
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Q: If 45% of a number is 90, what is the number?
Solution:
Let the number be x. 0.45x = 90, x = 90/0.45 = 200
Steps: 6
Show Steps
Step 1: Understand that 45% means 45 out of 100, or 0.45 in decimal form.
Step 2: Let the unknown number be represented by 'x'.
Step 3: Write the equation that represents the problem: 0.45 times x equals 90. This can be written as 0.45x = 90.
Step 4: To find x, you need to isolate it. Divide both sides of the equation by 0.45: x = 90 / 0.45.
Step 5: Calculate 90 divided by 0.45 to find the value of x.
Step 6: The result of the calculation is x = 200.
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