Sign Up!
Login
Welcome to Test-paper.info
Sunday, September 24 2017 @ 08:50 AM CDT
 Forum Index >  Test Paper Related >  Primary 5 Matters
 P5 % question
   |  Printable Version
By: JessicaTan (offline)  Tuesday, October 16 2012 @ 02:44 AM CDT (Read 874 times)  
JessicaTan

pls help with working solution.

10) Brent bought a packet of blue, red and green marbles. 45% of the marbles were blue. The rest of the red and green marbles were in the ratio 1 : 4 respectively. There were 66 more green marbles than red marbles. How many marbles did Brent buy?
(ans : 200)


thanks
Jessica

Forum Regular Member
Regular Member

Registered: 10/17/09
Posts: 82

Profile Email    
   
By: jessie_nol (offline)  Wednesday, October 17 2012 @ 11:03 AM CDT  
jessie_nol

Blue = 45%
Remaining % = 100 - 45 = 55%
Red = 1/5 x 55 = 11%
Green = 55% - 11% = 44%

Differences between Green and Red = 66 marbles
% difference between Green and Red = 44% - 11% = 33%
1% = 66 div 33 = 2 marbles

100 % = 2 x 100% = 200 marbles <-- answer.

Forum Newbie
Newbie

Registered: 10/17/12
Posts: 2

Profile Email    
   
By: JessicaTan (offline)  Thursday, October 18 2012 @ 07:28 AM CDT  
JessicaTan

Thanks for your help jessie




Rdg
Jessica Smile

Forum Regular Member
Regular Member

Registered: 10/17/09
Posts: 82

Profile Email    
   


 All times are CDT. The time is now 08:50 am.
Normal Topic Normal Topic
Locked Topic Locked Topic
Sticky Topic Sticky Topic
New Post New Post
Sticky Topic w/ New Post Sticky Topic w/ New Post
Locked Topic w/ New Post Locked Topic w/ New Post
View Anonymous Posts 
Able to Post 
HTML Allowed 
Censored Content