Answer:
56
Step-by-step explanation:
[tex]\bold{METHOD\ 1:}\\\\\begin{array}{ccc}100\%&-&x\\75\%&-&42\end{array}\qquad\text{cross multiply}\\\\75x=(100)(42)\\75x=4200\qquad\text{divide both sides by 75}\\\boxed{x=56}[/tex]
[tex]\bold{METHOD\ 2:}\\\\p\%=\dfrac{p}{100}\to75\%=\dfrac{75}{100}=0.75\\\\75\%\ of\ x\ is\ 42\to0.75x=42\qquad\text{divide both sides by 0.75}\\\\\boxed{x=56}[/tex]
