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45% of the pupils in a school are Chinese. 35% of them are Malays and the remaining 420 pupils are are Indians. What is the total enrolment of the school?

 Aug 1, 2015

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 #1
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If N = total number, then 420 represents (100 - 35 - 45)% (=20%) of the total, so 20%N = 420 or 0.2N = 420

 

N = 420/0.2 or N = 2100

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 Aug 1, 2015
 #1
avatar+33603 
+5
Best Answer

If N = total number, then 420 represents (100 - 35 - 45)% (=20%) of the total, so 20%N = 420 or 0.2N = 420

 

N = 420/0.2 or N = 2100

.

Alan Aug 1, 2015

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