Correct Answer For Question 7

by Anjali
(Delhi)

According to question :


G = 19W
Cu = 9W

Now let required ratio of gold and copper(G and Cu) be

G/Cu = x

So, xCu + Cu/W = 15

Cu(1+x) = 15W

9W(1+x) = 15w

1+x = 15/9

x = 15/9 - 1 = 6/9 = 2/3

So answer is not 3/2 but 2/3.

Comments for Correct Answer For Question 7

Average Rating star

Click here to add your own comments

Rating
star
Perhaps this is not correct
by: Anonymous

I think that you are mistaken for the question no. 7

you assume G/Cu=x; but you think it is not possible because of two reason your assuming is wrong:-
1. There is no use of G=19W for the question and answer to this question remain uneffected by using your method of solving.
2. you take both the mass and their density ration together and didn't decode it after the question!!!

thanks
Vikas Kumar
vikaskr.iet@gmail.com

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to views.

Recent Articles

  1. People lie about their IQ

    Oct 30, 18 04:18 PM

    When I was in college taking a statistics course, the professor began by discussing IQ distributions. He asked people in the class to raise their hand

    Read More

  2. Your math is flawed

    Jul 31, 18 03:24 PM

    According to your chart: 95% of IQ scores fall between 70 and 130 Which means that 5% of the population is distributed in either scores below 70 or above

    Read More

  3. Police Aptitude Test

    Jul 15, 18 02:24 PM

    Police Aptitude Test measures your aptitude for police jobs by offering police daily working situations.

    Read More