Question

Pls ajutor!
Calculati:
ac si bd, daca a/b=c/d=2 si a*b*c*d=900

Answer 1

 daca a/b=c/d=2
a=2b   si c=2d
atunci ac=4bd
avem si a*b*c*d=900
(a*c)*(b*d)=900
(4bd)*(b*d)=900
(bd)*(bd)=900/4=225   deci bd=15
ac=4*15=60