Question

Media aritmetica a 5 nr pare consecutive este 20.Afla numerele

Answer 1

a,b,c,d,e-nr. pare consecutive⇒

⇒a=a

b=a+2

c=a+4

d=a+6

e=a+8

Ma=(a+b+c+d+e)÷5=20⇒a+b+c+d+e=20×5=100

a+b+c+d+e=100⇒a+a+2+a+4+a+6+a+8=100

5a+20=100

5a=100-20

5a=80

a=80÷5

a=16⇒

⇒b=16+2=18

c=16+4=20

d=16+6=22

e=16+8=24

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Answer 2

a,b,c,d,e-nr. pare consecutive⇒

⇒a=a

b=a+2

c=a+4

d=a+6

e=a+8

Ma=(a+b+c+d+e)÷5=20⇒a+b+c+d+e=20×5=100

a+b+c+d+e=100⇒a+a+2+a+4+a+6+a+8=100

5a+20=100

5a=100-20

5a=80

a=80÷5

a=16⇒

⇒b=16+2=18

c=16+4=20

d=16+6=22

e=16+8=24

Sper ca te-am ajutat!

Coroana, te rog!