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3 years ago

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a textbook sold a combined total of 391 psychology and biology books in a week. the number of biology books sold was 71 less tha

n the number of psychology books. how many text books of each kind was sold.

1 answer:

Hunter-Best [27]3 years ago

7 0

Answer:

320

Step-by-step explanation:

I think you have to subtract the number and I think it will be 320

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