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Tuesday, August 22 2017 @ 02:15 AM CDT
 Forum Index >  Test Paper Related >  Primary 5 Matters
 CA2 Ai Tong 2012 question
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By: Jlen (offline)  Tuesday, July 30 2013 @ 08:49 AM CDT (Read 965 times)  
Jlen

Hi all,

Pls help me with the below question.

Joe,Amirah,Gastle and Sharifa had some lollipops.Joe had 5 lollipops less than 1/3 the total number
of lollipops. Amirah had 36 lollipops more than 1/3 the total number of lollipops. Gastle had
1/5 the number of lollipops Joe had and Sharifa had 5 lollipops less than Gastle. How many
Lollipops were there in total?

Ans: 120
Thanks u very much.

Regards,
Jlen.

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By: echeewh (offline)  Tuesday, July 30 2013 @ 12:50 PM CDT  
echeewh

Hey <Jlen>,

Following is my worked solution:

J = (1/3)total - 5
A = (1/3)total + 36
G = (1/5)J
= [(1/5) × (1/3)total] - 1 = (1/15)total - 1
S = (1/15)total - 1 - 5 = (1/15)total - 6

Total = J + A + G + S
= (1/3)total - 5 + (1/3)total + 36 + (1/15)total - 1 + (1/15)total - 6
Total - (1/3)total - (1/3)total - (1/15)total - (1/15)total = 36 - 5 - 1 - 6
(15/15)total - (2/3)total - (2/15)total = 24
(3/15)total = 24
Total lollipops = (15/15)total = 24 × (15/3) = 120

=========

Trust this helps.

Do let me know again if there's further clarification

Cheers,
Edward.

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Posts: 625

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