Question

7) calcule o valor das porcentagem abaixo:

(A)25% de 200

(B)15% de 1200

(C)38% de 389

(E)12% de 275

ME AJUDEM​

Answer 1

a) 25% de 200

100%--------200

25%----------x

100x = 25.200

100x = 5000

x = 5000/100

x = 50

b) 15% de 150

100%----------150

15%------------x

100x = 15.150

100x = 2250

x = 2250/100

x = 22,5

c) 50% de 1200

100%-----------1200

50%------------x

100x = 50.1200

100x = 60000

x = 60000/100

x = 600

d) 38% de 389

100%------------389

38%-------------x

100x = 38.389

100x = 14782

x = 14782/100

x = 147,82

Caso n tiver entendido, é regra de 3.

Answer 2

a-50

b-180

c-147,82

d-33

(só pesquisar no Google, 25% de 200)