Respuesta :
Answer:
[tex]x=60[/tex]
Step-by-step explanation:
In this case, we need to find 0.7 of any number is 42. Let the number is x. According to given question,
[tex]0.7\times x=42[/tex]
Dividing the above equation by 0.7. We can find the value of x as :
[tex]\dfrac{0.7x}{0.7}=\dfrac{42}{0.7}[/tex]
[tex]x=60[/tex]
So, if 0.7 of any number is 42, so the number is 60. Hence, this is the required solution.
To find the required number we have to create a expression. The required number is 60 because 0.7 or 70% of 60 is 42.
Given:
0.7 of a number is 42.
Let the number be x.
According to question, [tex]0.7x[/tex] is 42.
Now, writing this statement in mathematical notation, we get:
[tex]0.7\times x=42\\ \frac{7}{10}\times x=42\\ x=\frac{420}{7}\\x=60[/tex]
Therefore, the required number is 60. This is because 0.7 or 70% of 60 is 42.
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