Question

Brian has reduced his cholesterol level by 14% after his last check up. If his original level was 320, what is his approximate cholesterol level now? OA. 45 OB. 275 OC. 365 OD. 316

Answer 1

Let:

X = Original level of cholesterol

Xr = Reduced cholesterol

a = Amount of cholesterol reduced

so:

$\begin{gathered} Xr=X-a \\ where\colon \\ X=320 \\ a=320\cdot(\frac{14}{100})=44.8 \\ so\colon \\ Xr=320-44.8 \\ Xr=275.2\approx275 \end{gathered}$