Question

aflati numerele a, b si c, stiind ca a/2 = b/3, b/4 = c/5

a+c= 69​

Answer 1

Explicație pas cu pas:

a/2=b/3

a=2b/3

b/4=c/5

b=4c/5

c=5b/4

2b/3+5b/4=69

(4×2b)/12+(3×5b)/12=(12×69)/12

8b+15b=828

23b=828/:23

b=36

a=2×36/3

=2×1=24

c=5×36/4

=5×9

=45