## Prealgebra (7th Edition)

78% of what number is 78 ? 78% $\times$ x = 78 Translate to an equation 0.78 $\times$ x =78 Write 78% as 0.78 $\frac{0.78x}{0.78}$=$\frac{78}{0.78}$ Divide both sides by 0.78 x=$\frac{7800}{78}$ x=100 Check 78% $\times$ x = 78 78% $\times$ 100= 78 0.78$\times$ 100=78 78=78