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25 December, 07:29

I bought 3 Books my total is 150$ 1 book is 50% more expensive than all of them how much is it

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  1. 25 December, 08:36
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    The more expensive book cost $90, the other two combined cost $60.

    Step-by-step explanation:

    x = cost of more expensive book

    y = subtotal cost of the other books

    x = 50% more than y, so x = 1.50y = 1.5y

    x + y = total cost = $150

    1.5y + y = 150

    y = 150/2.5 = 60

    x = 1.5y = 1.5 (60) = 90
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