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. I have an IQ of 146

    May 10, 18 12:25 PM

    I just recently did an IQ test and found out I have an IQ of 146. I'm also only 12. I'd like to know if that IQ can go up if I were to train my brain.

    Read More

  2. Aptitude Test Free Of Cost May Impact You In Other Ways

    May 07, 18 03:04 PM

    Like other tools, free aptitude tests may be deficient in quality and performance.

    Read More

  3. High IQ Pro, An IQ Test Software, My Personal Review!

    May 03, 18 03:01 PM

    Yes, the HighIQPro program can help you to increase your IQ scores by 15-20 points within 20 days. You can practice in your free time

    Read More