Question

Questão de porcentagem

Answer 1

300 crianças

africanas:

300----100%

75------x%

300x=100*75

x=7500/300

x=25%

asiaticas:

300----100%

23-----x%

300x=23*100

x=2300/300

x=7,667%

europeias:

300----100%

102----x%

300x=102*100

x=10200/300

x=34%

latinos americanos:

300----100%

40-----x%

300x=40*100

x=4000/300

x=13,333%

norte americanas:

300-----100%

60------x%

300x=60*100

x=6000/300

x=20%