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Artyom0805 [142]
3 years ago
10

Brian has reduced his cholesterol level by 20% after his last check up. If his original level was 320, what is his cholesterol l

evel
now?
Mathematics
1 answer:
myrzilka [38]3 years ago
6 0

The present cholesterol level of Brian is 256

<u>Solution:</u>

Given that, Brian has reduced his cholesterol level by 20% after his last check up.  

His original level was 320

We have to find what is his cholesterol level now?

<em><u>The present cholestrol level is given as:</u></em>

present cholesterol level = previous cholesterol level – change percentage x previous cholesterol level

So, present cholesterol level = 320 – 20% of 320

20% can be written in fraction as \frac{20}{100}

\text { Present cholesterol level }=320-\frac{20}{100} \times 320

\begin{array}{l}{=320-\frac{1}{5} \times 320} \\\\ {=320-64=256}\end{array}

Hence, at present cholesterol level is 256

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