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Lily has a bag of 30 marbles. 40% are red, 30% are green, and 30% are blue. How many marbles are green and red combined? * O 9 marbles O 18 marbles O 21 marbles O 15 marbles

1 Answer

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Answer

Option C is correct.

There are 21 green and red marbles combined.

Step-by-step explanation

There are 30 marbles in the bag

40% are red

40% of 30 marbles = 0.4 × 30 = 12 red marbles.

30% are green

30% of 30 marbles = 0.3 × 30 = 9 green marbles.

30% are blue

30% of 30 marbles = 0.3 × 30 = 9 blue marbles.

The question then asks us to compute how many marbles are green and red combined.

There are 9 grren marbles and 12 red marbles, that is, there are (9 + 12) = 21 green and red marbles combined.

Hope this Helps!!!

User Jigar Fumakiya
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