Jerry has 7 3/4 dozen donuts. He purchased another 4.25 dozen donuts. How many dozens of donuts does he have now?

12 dozen

Step-by-step explanation:

Relatively easy stuff, just recall fractionsA dozen means  12he has 7 dozen (7 x 12=84) and 3/4 dozen (3/4 x 12=9) so that's 84+9= 93 donutshe gets 4.25, which is the same as 4 1/4, so its 4 dozen (4 x 12=48) and 1/4 dozen (1/4 x 12=3) so that's 48+3= 51 donutsAdd what you got 93 + 51 = 144 donutsThen divide this by 12 to get the number of dozens144/12 = 12 dozen

Ibelieve the total for the tip could be $21.90