Marillia paid $180 for 3 video games and 4 books. three months later she purchased 8 books and 6 video games. her brother guessed that she spent $320. assuming that the prices of video games and books did not change, is it possible that she spent $320 for the second set of purchases? explain

It is not possible that she spent $320 for the second purchase, this is because the prices of the books and the video games did not change.
In her first purchase, Marrillia bought 4 books and 3 videos and in her second purchase, she bought double of the products she bought in the first purchase, that is, 8 books and 6 videos. Since there is no price change in the products, Marilla must have spend $360 [$180 * 2] in her second purchase.

The answer should be b.

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