sarahworku
sarahworku
28-07-2017
Mathematics
contestada
ANSWER NUMBER 7 FOR 20 POINTS
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choixongdong
choixongdong
28-07-2017
#7
d/2 +d/5 + d/3 = 3
(15d + 6d + 10d) / 30 = 3
15d + 6d + 10d = 90
31d = 90
d = 90/31
d = 2 28/31
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