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dau multumesc si coroana faceti ex 2

Dau Multumesc Si Coroana Faceti Ex 2 class=

Răspuns :

a/3=b/4=5
a=5*3=15 
b=5*4=20
a+b=15+20=35
 b) 
x=15*7/6
x=105/6
x=17,6cm.

c) 60/100 * 200= 60*200/100
  12.000/100=120 lei ( 60% )
200+120=320 de lei ( scumpirea)