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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?
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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?

User Thegrandchavez
by
7.5k points

1 Answer

13 votes

Answer:

4 red marbles

Explanation:

green marbles = 9r

red marbles = r

9r + r = 40

10r = 40

r = 4 = red marbles

User Mladen Mitrovic
by
7.1k points
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