Question

Calcule as porcentagens:

a) 15% de 1400

b) 80% de 500

c) 18% de 250

d) 120% de 3460

e) 50% de 67080

Answer 1

Resposta:

a) 15% de 1400

1400________100%

x___________15%

100x = 15 × 1400

100x = 21000

x = 21000 ÷ 100

x = 210

b) 80% de 500

500________100%

x__________80%

100x = 80 × 500

100x = 40000

x = 40000 ÷ 100

x = 400

c) 18% de 250

250________100%

x__________18%

100x = 18 × 250

100x = 4500

x = 4500 ÷ 100

x = 45

d) 120% de 3460

3460________100%

x___________120%

100x = 120 × 3460

100x = 415200

x = 415200 ÷ 100

x = 4152

e) 50% de 67080

67080________100%

x____________50%

100x = 50 × 67080

100x = 3354000

x = 3354000 ÷ 100

x = 33540