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

`New\ level\ of\ cholesterol = 192`

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 = (Value)/(Toatl\ value)* 100`

Substitute all known value in above formula.

`20 = (Value)/(240)* 100`

`Value = (20* 240)/(100)`

`Value = (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