70 of what number is 28
Understand the Problem
The question is asking for a number such that when 70% of it is calculated, the result is 28. We will need to find the number by setting up an equation that reflects this situation.
Answer
$40$
Answer for screen readers
The final answer is $40$.
Steps to Solve
- Set up the equation
Let the unknown number be represented as $x$. According to the problem, 70% of this number equals 28. We can express this relationship as:
$$ 0.7x = 28 $$
- Isolate x
To find the value of $x$, divide both sides of the equation by 0.7:
$$ x = \frac{28}{0.7} $$
- Calculate the value of x
Now we just need to perform the division:
$$ x = 40 $$
The final answer is $40$.
More Information
The calculation shows that when you take 70% of 40, you get 28. This means 40 is the correct number. Additionally, understanding percentages is crucial when working with such problems in real life, such as calculating discounts or determining portions of quantities.
Tips
Some people might forget to convert the percentage correctly or misinterpret how to set up the equation based on the percentage. Always double-check that you are using the proper decimal form for percentages, such as using 0.7 for 70%.
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