Question

Aflati 2 numere stiind ca media artimetica este 45,5 iar citul este 0,(4)"

Answer 1

45,5=455/10=simplif.cu 5=91/2
0,(4)=4/9

a:b=4/9
a=4b/9

Ma=(a+b)/2
91/2=(4b/9+b)/2
91/2=[(4b+9b)/9]/2
91/2=13b/9:2/1
91/2=13b/9x1/2
91/2=13b/18
91x18=13bx2
1638=26b
b=1638/26
b=63

a=4b/9
a=4x63/9
a=252/9
a=28