crowntinyy3408
28.01.2021 •
Mathematics
A bag contains 6 red marbles, 5 purple marbles, and 7 yellow marbles. How many additional red marbles must be added to the 18 marbles already in the bag so that the probability of randomly drawing a red marble is 3/5??
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Ответ:
Ответ:
12
Step-by-step explanation:
6+5+7=18 total marbles.
3/5=(6+x)/(18+x)
5(6+x)=3(18+x)
30+5x=54+3x
5x-3x=54-30
2x=24
dam im smart as
Ответ: