Question

Media aritmetica a doua nr este 24 .Aflati numerele stiind ca sunt i p cu 5 si 7 ​

Answer 1

{a, b} i.p. {5,7}

(a+b) /2=24

5a=7b=k

5a=k => a=k/5

7b=k=> b=k/7

(k/5+k/7)/2=24 | *2

k/5+k/7=48 | *35

7k+5k=1680

12k=1680 |:12

k=140

=> a =5*140=700

=> b=7*140=980

BAFTA!