Ineed to know how to work it out someone plz me out due tommorow

Which statement about the annual percentage rate (apr) is not true?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

Jane’s favorite fruit punch consists of pear, pineapple, and plum juices in the ratio 5: 2: 3. how many cups of pear juice should she use to make 20 cups of punch?