Question

38% DE 520 E 45% DE 540

Answer 1

$38 \times 520 = 19.760$
$19.760 \div 100 = 197.6$
38% 520 = 197,6

$45 \times540 = 24.300$
$24.300 \div 100 = 243$
45% de 540 = 243

Answer 2

38% DE 520 E 45% DE 540

Bem , aqui você pode resolver por regra de três simples :

38% de 520

$\dfrac{100}{38} =\dfrac{520}{X} \\\\\\ 100X = 38\cdot520 \\\\\\ 100X = 19760 \\\\\\ X =\dfrac{19760}{100} \\\\\\ X = 197,6$


45% de 540

$\dfrac{100}{45} =\dfrac{540}{X} \\\\\\ 100X = 45\cdot540 \\\\\\ 100X = 24300 \\\\\\ X =\dfrac{24300}{100} \\\\\\ X = 243$


Resposta :

38% de 520 é 197,6
45% de 540 é 243