Question

In a set of pencils, 65% have red color rings,55% have green color rings,while 25% have both. THe pencils containing rings of neither red nor green are 45. the total number of pencils in the set :
A) 900
1200
C) 1225
D) 1500
@Ganpat .......? u there ?

Answer 1

I have made another reason,. I dont know its correct or not...... CHeck this out....@Ganpat

Answer 2

i am not sure, what exactly u intent to ask..

well, you have answer now, so you tilt that any how u like..

But to approach to 900.. Venn diagram itself would be sufficient.. and use that Union Formula..

A U B = A + B + A N B... (N means intersection)...

Answer 3

Okay..... THanks...

Answer 4

so u understood , how we approached.. right ??

Answer 5

yes. I got ur point last night.. And I found another way to solve this problem. SO I was just sharing my calculation that I made... And I wasn't intend to ask anything....... I just wanted U to look on my calculation and coment.... :)

Answer 6

well, you started you solution assuming answer as 900, right ??

Answer 7

yes.... Because I knew that was the right answer and according to my calculation... 900 only satisfies the whole problem ..... and If u try the same method for others. it willn't work or satisfy the given data in question...

Answer 8

yes.. thats the point.. if you try with random approach, it will be time consuming right ??

say u start with 1500, it doesnt work, than 1200... and at last 900..

Answer 9

yes..... I know.. U are rite.... It will be time consuming then... SO I found another easy way..... very shortcut..... in 10-20 seconds...... CAn I share that also ?

Answer 10

ohh please..

Answer 11

awesome dude.. thats damn good..

amazing !!!!!!!!

Answer 12

thanks