Question

Brian has reduced his cholesterol level by 10% after his last check up. if his original level was 180, what is his cholesterol level now?

a.
162
b.
178
c.
198
d.
18

Answer 1

Answer: A

Step-by-step explanation: I got A; 162, here's the walkthrough:

The formula for finding the amount after a percent is applied:

Amount = Whole number * part percent / 100

Let's plug in the numbers:

Amount = 180 * 10 / 100

180 * 10 = 1800

= 1800 / 100

= 18

We got 18, but we need to subtract that from the original number, 180 to find the current level. So,

180 - 18 = 162

And 162 is one of our choices, A. I hope this helped!