Mathematics, 07.10.2019 23:00 nya6557
Em uma papelara há no estoque 300 envelopes separados por cor e tamanho. apenas 3/5 dos envelopes são da cor branca e, destes, somente 2/6 são de tamanho grande.
o número de enveopes brancos grandes contidos no estoque dessa papelaria é
a 50
b 60
c 70
d 80
e 90
Answers: 1
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Em uma papelara há no estoque 300 envelopes separados por cor e tamanho. apenas 3/5 dos envelopes sã...
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