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11 votes
11 votes
Please help, I struggle with word problems. Thank you.

There are 200 marbles in a box. All the marbles are either red or blue. If there are 40 more red marbles than blue, how many red marbles are in the box?​

User Gove
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1 Answer

19 votes
19 votes
The correct answer is C. Let x be the number of blue marbles, and x + 40 be the number of blue marbles. There are 200 marbles in the box, so you have x+ x + 40 = 200, which is equivalent to 2x + 40 = 200, or x = 80.
User Casper Dijkstra
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