12 é o percentual de 40?
Responda:
#12# is #color(green)(30%)# of #40#
Explicação:
If #12# is #x%# of#40#
então
#color(white)("XXX")x/100 xx 40 =12#
#color(white)("XXX")40x=1200#
#color(white)("XXX")x=30#
#12# is #color(green)(30%)# of #40#
If #12# is #x%# of#40#
então
#color(white)("XXX")x/100 xx 40 =12#
#color(white)("XXX")40x=1200#
#color(white)("XXX")x=30#