Question

Calcule:a) 30% de 1500b) 12% de 120c) 27% de 900d) 55% de 300e) 98% de 450Valendo 20 pontos!

Answer 1

Calcule:a) 30% de 1500b) 12% de 120c) 27% de 900d) 55% de 300e) 98% de 450Valendo 20 pontos!

A)

$\dfrac{100}{30} =\dfrac{1500}{X} \\ 100X = 30*1500 \\ 100X = 45000 \\ X =\dfrac{45000}{100} \\ X = 450$

Resposta : 450

B)

$\dfrac{100}{12} =\dfrac{120}{X} \\ 100X = 12 * 120 \\ 100X = 1440 \\ X =\dfrac{1440}{100} \\ X = 14,4$

Resposta : 14,4

C)

$\dfrac{100}{27} =\dfrac{900}{X} \\ 100X = 27 * 900 \\ 100X = 24300 \\ X ={24300}{100} \\ X = 243$

Resposta : 243

D)

$\dfrac{100}{55} =\dfrac{300}{X} \\ 100X = 55*300 \\ 100X = 16500 \\ X =\dfrac{16500}{100} \\ X = 165$

Resposta : 165

E)

$\dfrac{100}{98} =\dfrac{450}{X} \\ 100X = 98*450 \\ 100X = 44100 \\ X =\dfrac{44100}{100} \\ X = 441$

Resposta : 441