Question

Calcule:a) 30% de 1500
b) 12% de 120
c) 27% de 900
d) 55% de 300
e) 98% de 450

Answer 1

a) 30% de 1500 = 450

$1500 - - - 100\% \\ x - - - 30\% \\ 30 \times 1500 = 100x \\ x = \frac{45000}{100} \\ x = 450$

b) 12% de 120 = 14,4

$120 - - - 100\% \\ x - - - 12\% \\ 12 \times 120 = 100x \\ x = \frac{1440}{100} \\ x = 14,4$

c) 27% de 900 = 243

$900 - - - 100\% \\ x - - - 27\% \\ 27 \times 900 = 100x \\ x = \frac{24300}{100} \\ x = 243$

d) 55% de 300 = 165

$300 - - - 100\% \\ x - - - 55\% \\ 55 \times 300 = 100x \\ x = \frac{16500}{100} \\ x = 165$

e) 98% de 450 = 441

$450 - - - 100\% \\ x - - - 98\% \\ 98 \times 450 = 100x \\ x = \frac{44100}{100} \\ x = 441$