Question

exercițiul 5 si cine vrea coroana si exercitiul 6

Answer 1

a+b=38,48
a=b+8,08
b+8,08+b=38,48
2b=30,4
b=15,2 ==> a=23,28

(a+b+c)/3=22
a+b+c=66
(a+b)/2=28
a+b=56
a•0,6=b

c=66-56=10
a+a•0,6=56
a(1+0,6)=56
a•1,6=56
a=35 ==> b=21

Answer 2

5)
a+b=34,48
a=b+8,08
b+b+8,08=34,48
2b=26,40
b=13,20
a=13,20+8,08
a=21,28
6)
M=(a+b+c):3=22
M=a+b+c=66
M=(a+b):2=28
M=a+b=56
a=b:0,6
b=0,6a
(56+c):3=22
56+c=66
c=10
a+0,6a=56
1,6a=56
a=35
b=0,6 x 35
b=21