Question

Aflati:

a) 25% din 16
b) 10% din 35% din 300
c) 85% din 12
d) 60% din 45
e) 15% din 10% din 450
f) 1,2% din 12

Answer 1

$a) \frac{25}{100} \times 16 = \frac{1}{4} \times 16 = \frac{16}{4} = 4$

$b) \frac{10}{100} \times \frac{35}{100} \times 300 = \frac{1}{10} \times 35 \times 3 = \frac{1}{2} \times 7 \times 3 = \frac{21}{2} = 10.5$

$c) \frac{85}{100} \times 12 = \frac{17}{20} \times 12 = \frac{17}{5} \times 3 = \frac{51}{5} =10.2$

$d) \frac{60}{100} \times 45 = \frac{6}{10} \times 45 = \frac{3}{5} \times 45 = 3 \times 9 = 27$

$e) \frac{15}{100} \times \frac{10}{100} \times 450 = \frac{3}{20} \times \frac{1}{10} \times 450 = \frac{3}{20} \times 45 = \frac{3}{4} \times 9 = \frac{27}{4}=6.75$

$f) \frac{1.2}{100} \times 12 = \frac{1.2}{25} \times 3 = \frac{3.6}{25} = 0.144$