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 Ai Tong 2011 CA1 Paper 2 Q7
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By: 2000123 (offline)  Tuesday, June 05 2012 @ 02:52 AM CDT (Read 1115 times)  
2000123

Jeff has 45% as many sweets as Melvin and 40% fewer sweets than Alfred.
If they have a total of 132 sweets, how many sweets does Jeff have Question

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By: echeewh (offline)  Tuesday, June 05 2012 @ 04:45 AM CDT  
echeewh

Hi there,

Following pls find the worked solution:

M: 100u J: 45u

Given J has 40% fewer sweets than A, we have ...
J: 60% of what A has (i.e. A = 100%)

J: 60% --> 45u
A: 100% --> (45/60) x 100 = 75u

In ratio form, we have ...

M : J : A
100 : 45 : 75
20 : 9 : 15

Given that theres a total of 132 sweets, we have ...

20u + 9u + 15u --> 132
44u --> 132
1u --> 3

J = 9u --> 3 x 9 = 27

=============================

Trust this helps.

Cheers,
Edward

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