Question

calcule as porcentagens a 20% de r$ 800 B 10% de r$ 70 15% de r$ 100 de 9% de r$ 600 e 25% de r$ 42​

Answer 1

20% 100

x 800

100x= 16.000

x= 16.000/100

x= 160

10% 100

x 70

100x= 700

x= 700/ 100

x= 7

15% 100

x 100

100x= 1.500

x= 1.500/ 100

x= 15

9% 100

x 600

100x= 5.400

x= 5.400/ 100

x= 54

25% 100

x 42

100x= 1.050

x= 1.050/ 100

x= 10,5

Answer 2

Resposta:

20/100×800

0,2×800=160

10/100×70

0,1×70=7

15/100×100

0,15×100=15

9/100×600

0,09×600=54

25/100×42

0,25×42=10,5