Question

dacă 25 cm=25/100m atunci 50 cm=

Answer 1

25 cm = 25/100 = 1/4

50 cm  = 2 x 1/4 = 2/4 = 1/2 = 50/100

Answer 2

$25 \: cm \: = \frac{25}{100} = \frac{1}{4}$
$50 \: cm \: = 2 \times \frac{1}{4} = \frac{2}{4} = \frac{1}{2} = \frac{50}{100}$

Succes! :)