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. Im Apparently 125 and Higher

    Jan 11, 19 02:16 PM

    Im a 15 year old in high school and I took a test that said I had an IQ of 125 or higher meaning university level, But in high school im failing all most

    Read More

  2. Emotional Intelligence in Business Shines!

    Jan 07, 19 02:17 PM

    When your employer is looking for a workforce with emotional intelligence in business, you need to understand what is included in the emotional intelligence?

    Read More

  3. Evolution Continued

    Jan 07, 19 01:39 PM

    Descendants of early humans more or less continue with the same level of intelligence because nature did not drive change. Those who were subjected to

    Read More