Answer: The value of whole is 120.
Step-by-step explanation:
Since we have given that
84 is 70% of the whole.
Let the whole be 'x'.
According to question, it becomes,
[tex]84=\dfrac{70}{100}\times x\\\\84=0.7\times x\\\\\dfrac{84}{0.7}=x\\\\120=x[/tex]
So, we have use the proportion i.e. [tex]\dfrac{84}{70\%}=\dfrac{84}{0.7}[/tex] to determine the value of whole.
Hence, the value of whole is 120.