Answer:
the tripled recipe of peaches is 2 or 6/3
the tripled amount of rhubarb would be 21/2 or 
Step-by-step explanation:
for the first part, just multiply the top number (2) by 3. (that would be 6)
then, divide that by the bottom number (3).
6/3 = 2.
for the second part, you need to convert the mixed number to an improper fraction.
as an improper fraction is 
now, multiply the top number (7) by 3. (that would be 21)
then. divide that by the bottom number. (2)
21/2 = 