Is this for your personal knowing or school work
Your answer would be A: 24
because 20% of 30 is 6 and because he wants to decrease it by 20% (or 6) it would make your answer 24.
20% into a decimal is .20
.20 divided by 30=6
Love free stay clean and always be livky
120/80 is the normal for a kid in some cases when they are a little over weight. but if they are in normal range of weight and height 117/72