Question

1. Intr-o clasa sunt 20 de elevi,15% sunt premianti .Cati elevi premianti sunt in clasa?
2. Untul contine 65%grasime . Ce cantitate de grasime contine un pachet de unt de 250 g?

Answer 1

ex 1.

20-----------------------------100%
x----------------------------------15%

x=20*15 / 100 
x= 300 /100 = 3 elevi

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ex 2.

250-------------------------------100%
y-----------------------------------65%

y= 250*65 / 100
y= 16250 / 100 = 162,2 g unt