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  1. #1
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    Question pre algebra equation solve

    A pharmacist has 2 hectograms 55 grams of pills. Each pill weighs 1 gram 2 centigrams. How many pills does the pharmacist have altogether?
    A. 205
    B. 250
    C. 255
    D. 350

    I came up with B. 250
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by rose234 View Post
    A pharmacist has 2 hectograms 55 grams of pills. Each pill weighs 1 gram 2 centigrams. How many pills does the pharmacist have altogether?
    A. 205
    B. 250
    C. 255
    D. 350

    I came up with B. 250
    We can "logic" this one out, but it makes things a lot easier if we know that hecto is the metric prefix for 100. See here.

    However, we know that hecto IS a metric prefix, so it must be some multiple of 10. Thus the pharmacist has 2*10^n + 55 grams, where n is some integer. The only number of that form is answer C, 255.

    -Dan
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  3. #3
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    You missed a part I think

    yes he has 255 grams of pills but each pill is 1 gram and 2 centigrams so how many pills does the pharmacist have?

    250?
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  4. #4
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by rose234 View Post
    yes he has 255 grams of pills but each pill is 1 gram and 2 centigrams so how many pills does the pharmacist have?

    250?
    My apologies! I didn't read the question correctly.

    Let's see. 255 g of pills and each pill is 1.02 g. Thus he has
    (255 g)/(1.02 g) = 250 pills, just as you said.

    -Dan
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