Question

Daca 2 paini cost cat 3 cornuri.9 9 cornuri cat 20 napolitane.4 napolatine cat 15 turte .iar 3 turte cat 8 bomboane.aflati cate bomboane se pot cumpara cu pretul a 3 paini ?

Answer 1

2paini=3cornuri
9cornuri=20napolitane
4napolitane=15turte
3turte=8bomboane

2paini=3 cornuri  => 9c=6p
9cornuri=20napolitane   => 4n=6:5p
4napolitane=15turte  =>  3t=6/5 :5 p = 6/25p
3turte=8bomboane   => 8b = 6/25p
1 b= 6/25p : 8b = 6/25x1/8=6/200=3/100p

deci 1 b (bomboana) = 3/100 din pretul unei p (paini)

1b=3/100 x p

1p= b:3/100=100b/3

3p = 100b/3 x 3 = 100 b

cu pretul a 3 paini se pot cumpara 100 bomboane