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Math Help - fraction help

  1. #1
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    fraction help

    In a polling booth, total number of voters is 1575, of which 0.4 part are male voters. If a candidate gets 0.6 part of male voters and 0.4 part of female voters, then find out how many votes did the candidate get?

    (A) 189
    (B) 756
    (C) 378
    (D) 630
    (E) 945
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  2. #2
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    Quote Originally Posted by sri340 View Post
    In a polling booth, total number of voters is 1575, of which 0.4 part are male voters. If a candidate gets 0.6 part of male voters and 0.4 part of female voters, then find out how many votes did the candidate get?

    (A) 189
    (B) 756
    (C) 378
    (D) 630
    (E) 945
    We have 1575 voters, out of which 40% are male and 60% are female. First we want to calculate exactly how many male and female voters there are.

    To calculate 40% of 1575 we will simply take 10% (which is 157.5) and multiply it by 4:

    0.4 \cdot 1575 = \frac{4}{10}\cdot 1575 = 4 \cdot 157.5 = 630 so we have 630 male voters and 945 female voters. Now, use the same way to calculate 60% of 630, 40% of 945 and add them together to get the final result.
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  3. #3
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    Quote Originally Posted by sri340 View Post
    In a polling booth, total number of voters is 1575, of which 0.4 part are male voters. If a candidate gets 0.6 part of male voters and 0.4 part of female voters, then find out how many votes did the candidate get?

    (A) 189
    (B) 756
    (C) 378
    (D) 630
    (E) 945
    From the male voters, the candidate received: (0.4)(0.6) of 1575
    From the female voters, the candidate received: (0.6)(0.4) of 1575

    The total votes received by this candidate:  0.4 \times 0.6 \times 2 \times 1575

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