1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    Ans1:

    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

    Fredrik

    User Avatar
    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

    jedishrfu

    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

    Mark44

    Staff: Mentor

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

    jedishrfu

    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.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Fractions questions (I suck at them sorry!)
  1. I suck at probability (Replies: 3)

  2. Fraction question (Replies: 2)

  3. Question in fractions (Replies: 3)

Loading...