Question

Segmentul AB cu lungimea de 47 cm se imparte in segmente proportionale cu 3 segmente de lungimi date : 12 mm, 15 mm si 20 mm. Aflati lungimile celor trei parti ale segmentului AB

Answer 1

a/2=b/15=c/20

a+b+c=470mm

a/12=K ==> a=12k

b/15=K ==>b=15k

c/20=K ==>c=20k

12k+15k+20k=470

47k=470 ==> k=10

a/12=10 ==> a=120mm

b/15=K ==>b=150mm

c/20=K ==> c=200mm