Question

calcule
a)8% de 1000
b)4% de 395
c)3% de 875
d)7% de 380
e)10% de 492
f)12% de 648

Answer 1

a)0.08
b)15.8
c)26.25
d)26.6
e)49.2
f)77.76

Answer 2

Oi

Regra de três simples, multiplique cruzado.

a)

a) 8 % de 1000

100%-------------1 000

8%-----------------x

100.x = 8 . 1000

100x = 8 000

x =8 000/100

x = 80

b) 4% de 395

100%-------------395

4%----------------x

100.x = 4.395

100x = 1580

x = 1580/100

x = 15,8

c) 3% de 875

100%---------------875

3%-----------------x

100.x = 3.875

100x = 2625

x = 2625/100

x = 26,25

d) 7% de 380

100%-------------380

7%----------------x

100.x = 7.380

100x = 2660

x = 2660/100

x = 26,6

e) 10% de 492

100%-------------492

10%---------------x

100.x = 10.492

100x = 4920

x = 4920/100

x = 49,2

f) 12% de 648

100%---------------648

12%-----------------x

100.x = 12.648

100x = 7776

x = 7776/100

x = 77,76

Espero ter ajudado

Bons estudos