T = 5 a
i = 4% aa
j = 1200
c = ...
j = cit/100
c = 100j / it
c = 100*1200 / 4*5
c = 120000 / 20
c = 12000/2
c = 6000
montante
M = c+j
M = 6000+1200
M = 7200
Twenty percent of $35 is 0.20($35) = $7. The discount is $7.
I think x = 78
because 21/14 = 1.5
so x = 1.5*52
x = 78
12. 6$
13. 60 birds
14. 10 inch