Ight last one for rn I'll do some more in a bit​

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?