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Fractions questions (I suck at them sorry!)

  1. Jan 24, 2015 #1
    Kindly check this math.

    A. The problem statement, all variables and given/known data:

    Q1. There are 2100 pupils in a school. 1/3 of the pupils are girls. 2/5 of the girls can swim. How many girls can swim?

    Q2. 5 Whole 2 hundredths=?

    Q3. 3 Whole 8 tenths= ?

    B. The attempt at a solution


    2100 x 1/3= 700
    700 x 2/5 =280

    280 girls can swim

    Ans2: 5 Whole x 0.02 = 5.02
    Ans3: 3 Whole x 0.8 = 3.8

    Thanks in advance!
  2. jcsd
  3. Jan 24, 2015 #2


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    Staff Emeritus
    Science Advisor
    Gold Member

    1. looks good.

    2. "five and two hundredths" is ##5+\frac{2}{100}##. That x you wrote looks like a multiplication symbol. Your result is correct, but unless you were asked to answer in decimal form, the answer should be a fraction. (An answer in decimal form makes the reader think that maybe the answer has been rounded off).

    3. See 2.
  4. Jan 24, 2015 #3


    Staff: Mentor

    Question 1 looks right.

    Question 2 and 3, what do they mean by 3 whole? Is that like I have 3 pies and now I want 8 tenths of them?

    In that case it's 3x0.8 as you wrote but the answer isn't 3.8 as you've added .8 to the 3 not multiplied by .8
  5. Jan 25, 2015 #4


    Staff: Mentor

    The OP miswrote -- it should be 3 + 0.8
  6. Jan 25, 2015 #5


    Staff: Mentor

    Hi Mark44, thanks for the correction, I didn't understand the terminology of 3 whole 8 tenths and thought it was something else.
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