Question

Calcule :


a) 20% de 240 m. b) 35% de 500 litros


c)16% de 1200 cm d) 45% de R$ 2000,00

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Answer 1

a) 20% de 240 m

REGRA DE 3:

100%  -----  240

20%  ------  x

100x = 20 . 240

100x = 4800

$x=\frac{4800}{100}$

x= 48

b) 35% de 500 litros

REGRA DE 3:

100%  -----  500

35%  ------  x

100x = 35 . 500

100x = 17500

$x=\frac{17500}{100}$

x = 175

c)16% de 1200 cm

REGRA DE 3:

100%  -----  1200

16%  ------  x

100x = 16 . 1200

100x = 19200

$x=\frac{19200}{100}$

x = 192

d) 45% de R$ 2000,00

REGRA DE 3:

100%  -----  2000

45%  ------  x

100x = 45 . 2000

100x = 90000

$x=\frac{90000}{100}$

x = 900