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A bag contains 40 red and green marbles. The number of green marbles, g, is 9 times the number of red marbles, r.
How many red marbles are in the bag?
ОО
34
O 36
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Sagot :

Answer:

4

Step-by-step explanation:

40 = r+g

g=9r

40=r+9r

40=10r

r=4

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