Question

calcule: 3% de 15? 10% de 12,5? 13% de 24? 23% de 30? 36% de 100? ​

Answer 1

regra de três

3% 100

x 15

100x= 45

x= 45/100

x= 0,45

10% 100

x 12,5

100x= 125

x= 125/100

x= 1,25

13% 100

x 24

100x= 312

x= 312/100

x= 3,12

23% 100

x 30

100x= 690

x= 690/100

x= 6,90

36% 100

x 100

100x= 3.600

x= 3.600/100

x= 36

Answer 2

Assunto: Porcentagens.

3% de 15  = 3 * 15/100 = 0.45

 10% de 12,5 = 10 * 12.5/100 = 1.25

 13% de 24 = 13 * 24/100 = 3.12

 23% de 30 = 23 * 30/100 = 6.9

36% de 100 = 36 * 100/100 = 36