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

RSS

  1. Emotional Intelligence Definition Evolution

    Oct 14, 19 06:41 AM

    Emotional intelligence definition has roots in the concept of intelligence quotient. However, modern psychologists take it quite differently.

    Read More

  2. Algebra aptitude tests, expressions, problems and formulae.

    Oct 14, 19 04:05 AM

    Algebra aptitude tests are meant to measure your understanding and interpretation of algebraic discipline.

    Read More

  3. The concept of IQ makes me want to die

    Oct 10, 19 01:57 PM

    The title of this comment says it all. I think I’m trash.

    Read More