Question

Ex 2 si 3 va rog eu mult dau ce o fi

Answer 1

Răspuns:

2.

a)20/100 • 75 = 15

b)12/100 • 50 = 6

c)35/100 • 60 = (35•6)/10 = (7•6)/2 = 21

d)36/100 • 225 = 9•9 = 81

e)75/100 • 312 = 3•78 = 234

f)504 : 4 = 126 (25% înseamnă sfert)

3.

a)37=x/2 =>x=74

b)87=x/10 =>x=870

c)98=7x/10 =>x=140

d)51=3x/25 =>x=25•17=425

e)57=3x/4 =>x=4•19=76

f)42=6x/25 =>x=7•25=175