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December 11th, 2018, 12:48 AM  #1 
Banned Camp Joined: Dec 2018 From: vryry Posts: 17 Thanks: 0  How to solve this question
Hello sir How to solve this question? In an examination, a student who gets 20% of the maximum marks fails by 5 marks. Another student who scores 30% of the maximum marks gets 20 marks more than the pass marks. The necessary percentage required for passing is Last edited by skipjack; December 11th, 2018 at 05:46 AM. 
December 11th, 2018, 05:28 AM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,803 Thanks: 970 
Ah geeezzzzz....here "it" comes again...

December 11th, 2018, 05:44 AM  #3 
Global Moderator Joined: Dec 2006 Posts: 20,105 Thanks: 1907 
As the difference between 20% and 30% is 10%, 10% of the maximum number of marks is 5 marks plus 20 marks, i.e. 25 marks. Hence 5 marks is 2% of the maximum number of marks, and so the minimum percentage (of the maximum number of marks) required for passing is 22%. 

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