Question

Brian has reduced his cholesterol level by 20% after his last check up. If his original level was 240, what is his cholesterol level now?

Answer 1

Answer:

$New\ level\ of\ cholesterol = 192$

Step-by-step explanation:

Given:

Reduced level of cholesterol = 20%

Original level of cholesterol = 240

We need to find cholesterol level now

Solution:

First we find reduced level of cholesterol using percentage formula.

$Percentage = \frac{Value}{Toatl\ value}\times 100$

Substitute all known value in above formula.

$20 = \frac{Value}{240}\times 100$

$Value = \frac{20\times 240}{100}$

$Value = \frac{4800}{100}$

$value = 48$

So reduced level of cholesterol = 48

But we need to find cholesterol level now, so we subtract reduced level from original level of cholesterol.

$New\ level = original\ level - reduced\ level$

$New\ level = 240 -48$

$New\ level = 192$

Therefore, Cholesterol level at present = 192