Explicație pas cu pas:
60% din 70 =>
[tex] \frac{60}{100} \times 70 = \frac{4200}{100} = \frac{42}{1} = 42 [/tex]
[tex] \frac{80}{100} \times 2500 = \frac{80 \times 2500}{100} = \frac{80 \times 25}{1} = 80 \times 25 =2000[/tex]
[tex] \frac{24}{100} \times 120 = \frac{24}{10} \times 12 = \frac{24}{5} \times 6 = \frac{144}{5} [/tex]
[tex] \frac{30}{100} \times 45 = \frac{30 \times 45}{100} = \frac{1350}{100} = \frac{135}{10} = \frac{27}{2} [/tex]
