Pet food inc. created a new packet size that was 25% larger than the old package if the old package contained 20 pounds how much does the new package contain?

The new package weighs 25 pounds
do you need and explanation?

Well you put the decimal two times to the right 20%  (the percent is where the decimal starts) .20

Then multiply that by the original amount which gives you 4. 

Add 20 and 4.

= 24 pounds

That's my best guess, hope i'm right