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Wednesday, December 13 2017 @ 04:48 PM CST
 Forum Index >  Test Paper Related >  Primary 4 Matters
 P4 math - fractions
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By: kellywww (offline)  Monday, September 27 2010 @ 04:28 AM CDT (Read 2007 times)  
kellywww

Can anyone help with this P4 math question?

1/3 of the pupils in the class wanted to go Japan.
1/4 of the pupils in the class wanted to go Korea.
1/6 of the pupils in the class wanted to go Thailand and the rest wanted to go Malaysia.
There were 3 more pupils who wanted to go Malaysia than Thailand.
Find the total number of the pupils in the class.

Answer given is: 3 x 12 = 36 pupils.

Thks! Mr. Green

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By: kellywww (offline)  Monday, September 27 2010 @ 04:34 AM CDT  
kellywww

Please ignore my question, I realised how to solve it already. Thks!!

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By: shanthi (offline)  Monday, October 04 2010 @ 12:05 AM CDT  
shanthi

but pls give solution,so that i too can learn.thanks

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By: suz855 (offline)  Monday, October 04 2010 @ 09:35 PM CDT  
suz855

common multiple of 3,4 & 6 is 12 thus choose 12 as the common denominator

Japan --> 1/3 = 4/12
Korea -->1/4 = 3/12
Thailand --> 1/6 = 2/12
Therefore, M'sia --> 12/12 - (4/12 + 3/12+2/12) = 3/12

Difference betw M'sia and Thailand is 1/12, thus 1/12 = 3 people
3 x12 = 36 total people

Big Grin

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By: shanthi (offline)  Tuesday, October 05 2010 @ 08:04 PM CDT  
shanthi

thanks

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